Grand & King Seiko transparent caseback mod - The BEST & ONLY mod you should do

[@robertrdsten2915]

It's almost as the movement originally was made for the caseback! Great looking watch and movement. I read several places the six number on the movement tells the movement is a certified chronometer.

[@Irnbruist]

have the same KS and would love this clear case back. Count me in.

[@EdwardChen0]

Yes please, count me in. I have two 45KS that I want to preserve the caseback and see the movement! I'd like to be closer to the $50 price point though. Thanks for posting!

[@WatchGeek]

Great to know, if I manage to find someone willing to produce in low numbers I will make a video on it to let you guys know

[@Drive-n-Vibe]

I'd just like to mention that someone managed to create a clear caseback (not for a king seiko) over on the WatchUSeek Forums and sold them for $15 shipped so it's definitely possible.

[@deankerlin6999]

Did you have any luck getting these made?

[@WatchGeek]

I am communicating with one producer to make these so stay tuned

[@OPMDK]

I too would be in on this for my 4502-7000

[@superfast30]

Arguably one of the greatest high beat manual wind movements ever made!

[@huangcjz]

I'd be interested in a display case-back for one of these too!

[@Max2Phaz3]

I’d be glad to get this clear caseback for my 45-8020. Did you finally managed to make a few of them? Any clues on how to get one? Thanks for your support 😊

[@logansmith8623]

I have a GS 4520-8000 and would love to preserve the gold medallion on the caseback. Also fascinated to see the movement too. I would be interested if you find a supplier or make your own as long as the price point wasn't overly expensive.

[@florianhess]

Would you mind sharing the supplier? *or kept a secret for a reason?

[@jc944t]

Just bought a vintage KS High Beat. I'm definitely interested in this mod! Thanks for showing!

[@leonardourbano3963]

Hello, any news on the clear case back?

[@MengkuongChhun]

Hi watch geek, I just got the same King Seiko last month and now you make me want that clear case back too!! Still waiting for your full review of that watch.

[@fastbikesandtoomuchcoffee6871]

That’s such a cool mod. I’m about to buy a KS and would love to get myself a clear case back. So far I haven’t had any luck finding the part..

[@lucamichael6852]

If you start to make this try and come out with different options for different case sizes or watches. Thanks.

[@simonremy4950]

Excellent mod! Definitely interested in two case backs (2 Grand Seiko) : one for a 8000 case and one for a 7010 case!

[@rajgill7576]

Have you found a 7010 case?

[@EricBishard]

Can you replace the acrylic with sapphire on these watches. The face crystal?

[@caseycollins9406]

Did you ever end up finding a way to get these casebacks?

[@WatchGeek]

Yup, even better ones: kzbin.info/www/bejne/oGbGgGN6j9uZqbssi=8H3BFJkcWmn7jyoI

[@iancatlin5985]

I'd happily buy one of those case-backs

[@SlamDunkz3ooo]

I am on the hunt for a clear caseback watch. Some of those movements are just mesmerizing. The Tag Heuer Grand Cerrera is a nice one. I never even considered modding one of the watches in my current collection. Hmmm. The watch in this video is super classy.

[@casparbroekhuizen4854]

Hey mate any chance you managed to source a few more? I'd love to buy one.

[@JurgenADV]

Loved the dramatic music

[@garrettjanssen7683]

This video is almost 2 years old at this point. Is there an update on these display backs?

[@WatchGeek]

Sadly no, I've given up since there were several failed attempts

[@garrettjanssen7683]

@@WatchGeek bummer :/

[@thatwhitecat]

I own a Seiko Lord Marvel 36000 and need a new caseback is there a clear version available? It's the Seiko 5740-8000

[@yhwe100]

I have a Seiko 5. It came with transparent backcase. No idea ori.

[@elvis-mobil7047]

I have a "Seiko Lord Marvel 36.000" witch transparent back fits here?

[@ryancockerham689]

I’m shopping for a gs possible ks now and would definitely be interested in one of those backs

[@alexanderla6468]

Where can I get one just purchased my 1st vintage watch thanks!!! 🎉

[@usmanmughal327]

Where can i purchase a seethrough caseback for king seiko ks4002-8000???

[@jp2503]

Do you know where I can find a crystal replacement for this watch? I also have the black dial and would like to find the white dial for the 5626

[@priyabratamohanty2619]

Any idea to get one of these ? I searched in yahoo Jp . Could not find any for my KS 4520-7000. Please help me with some leads on the display back .

[@AlessandroMarvasi]

I’m interested too in the clear case back!

[@atlas4080]

Do you know if they 44KS have the same dimension casebacks?

[@erilah102]

I have a king seiko 4502. I would love to buy a clear caseback if you have!

[@andywu9286]

WatchGeek, do you know if the current supplier that you are discussing with able to custom make display caseback for omegas? I also have an omega FOIS that I’d love to get a display caseback for but just couldn’t find one on the market. Thanks

[@WatchGeek]

I don't think so as he specializes in Seikos but I'll ask

[@andywu9286]

Watch Geek that would be awesome, thank you!

[@lorenzo89er]

Just watching this video now - I'd absolutely love an exhibition case back for my KS!!!

[@anthonytam5633]

Where did you buy the clear caseback?

[@furiousg1904]

I have the same watch, i like that clear case back .

[@ajm2285]

Looks great! Where can I find a clear case back?

[@WatchGeek]

Yahoo auctions Japan

[@ElSenorJorge]

What’s the band size 20mm?

[@MJFallout]

I'm quite interested in adding a see-through case back to an old AGS Seiko (so that would be quartz) from the 5xxx calibre? (is that what denotes the movement) line. It's 5M22-5860 (maybe) Is one of these the case size? How can one be sure what might fit? Any input is appreciated. Thx

[@audiokachina1]

Nice vídeo, please Let me know about the clear case base.

[@justinkhleung8748]

Any tips on which dealers / ebay sellers (or if one visits Japan - which shops to go to) to shop for King Seikos?

[@WatchGeek]

I use Yahoo auctions Japan

[@Irnbruist]

Is there any progress in the making of theses crystall case backs?

[@pancahidayat]

i also waiting some updates for this cool stuff

[@ivankool357]

Please count me in. I would like the clear case back too. Thank you for sharing !!!

[@topg2820]

Can you do this to other watches? Many dress watches are perfect but they don't get open case back which is dissapointing

[@WatchGeek]

Yes with the right tooling and with an example caseback

[@thierryhenrion9484]

Hi where I can buy this amazing case back please , ????

[@nathanhouston4769]

Where can I get a clear case back?

[@yasirzainuddin]

Where did you get the transparent caseback?

[@BayuMukti937]

I am planning to buy 4402 8000, is it good? Where do you buy the case back?

[@philippzahn5465]

Can someone do a list of all the Grand Seiko and King Seiko reference numbers that the case back would fit. I’m thinking about getting a King Seiko 45-7000, would that case back work for that model?

[@WatchGeek]

Yes

[@philippzahn5465]

@@WatchGeek I have sent you an email

[@philippzahn5465]

@@WatchGeek I'm interested, do you currently have one of those case backs?

[@WatchGeek]

Unfortunately no, the manufacturer sent a modified existing caseback and it doesn't fit

[@frankieeisenberg6506]

I really like the look of that, but something just irks me about modding a vintage watch.

[@shmutube]

Any progress on making many of these? I'd sure like 4-5...

[@clo2715]

Wow! Looks a lot better. Do you know if you could do that for any watch? I'm sure my watches with a 6R15 movement might not look as nice but it's still cool to be able to watch the movement at work.

[@WatchGeek]

There are clear casebacks available for 6r15 watches, I have one for Sumo up for sale on eBay

[@huangcjz]

Do you have a link to your eBay page?

[@timothychow5911]

Just bought a gs 4520 8000, where can In find the case back?

[@WatchGeek]

I'm waiting to get the news of them produces

[@TheTimLara]

Looks amazing! I actually lol'd at the music, haha. :)

[@florianhess]

Same here. The epicness over... nothing really, lol

[@dgbucko]

Any news on where this can be purchased from?

[@中熱劍]

Just bought a 5626 7000 and would love to have a transparent case back to revel the beauty inside! Where can I find such casebacks?

[@butwait]

any seiko 5 caseback will fit on a k56 series

[@김성진-q4f3h]

I bought 4502 7001 few minites ago after watching this video! The caseback is what I image! I also found the caseback seller, but 4502 7001 caseback seems discontinued. Are you still interested in making the caseback more popular and easy to buy?

[@WatchGeek]

Sadly there are way too few people asking for it to make it feasible

[@Chris-zc8ul]

Watch Geek how many would you need to order as a minimum? I would be interested in helping

[@Inkreptile]

I'm making one for a 4522-8000...

[@ZulqarnaynAwan]

But isnt it hard to find transparent caseback for old vintage watches?

[@gavinfrandsen5920]

Hi do you have any of these available

[@ocb05]

Would like to get a clear caseback for GS 5722 series!

[@KHGuitarFreak1988]

Very nice. Take it there might be a variant for the automatic versions?

[@WatchGeek]

If you're talking about the 56ks, a regular Seiko 5 caseback can fit

[@KHGuitarFreak1988]

Cool. Was wondering if the aftermarket Seiko replacement would still have that black printing on the glass. Looks tacky to me

[@WatchGeek]

You can probably remove it using acetone or paint thinner

[@KHGuitarFreak1988]

This is making me giddy wanting to buy a King Seiko

[@waynegillespie4213]

Wayne Gillespie That is a beautiful watch. I would very much like to have one. I'm new to this. Never bought a watch that wasn't new in the box. How do I find one like this. Would like it to be in very good shape like yours. I don't really want to have to do much more than service it and put the display case back on it. Can you advise me. Many thanks. Enjoyed the video. Keep up the good work. Thanks.

[@GTC4Studio]

Hi sir, appreciate if u can help... Love your mod.. I really need one of this, but I can't find... Can you share the link..?

[@WatchGeek]

They come up rarely on Yahoo auctions Japan

[@Svevid]

Is this buyable?

[@IvanTLY]

Hi :) Do we have the transparent caseback? I am looking for one.

[@ph69jbl]

Hi! What is the exact part no to search for please?

[@WatchGeek]

It's a custom made part, it's not an official Seiko part

[@ph69jbl]

Makes the hung more interesting and the catch more rewarding ;)

[@WatchGeek]

Exactly

[@russelllange2037]

One of the best looking watches imho. I'm on the lookout for a no date.

[@WatchGeek]

Happy hunting 😁

[@thomasching46]

I have heard this mod makes the match more prone to get magnetised, is this your experience?

[@WatchGeek]

Haven't experienced any problems

[@watchcollectingstrategy]

Man that looks insane!!!! I wish I could do that to my 8541 Pellaton

[@WatchGeek]

Thanks 😊

[@WatchGeek]

Watch Collecting Strategy there are so many vintage watches with exceptionally looking movements that I don't understand how there isn't a company specialized in exhibition casebacks for them

[@watchcollectingstrategy]

Watch Geek Maybe now is our chance to own that market 😉

[@WatchGeek]

Haha we just need a CNC machine

[@win6903]

Any updates on the caseback ?

[@WatchGeek]

Nope still nothing

[@theophilustan5959]

Where can get one

[@mattsonava]

Also interested. Is this fit my seiko 5740 8020?

[@WatchGeek]

I don't think so

[@sakamoto_mio]

~ I have always (watched) your channel (however) have not placed a comment . . . ~ I'm always on the lookout for great watches, such as the one seen in this video and the mod upgrade is PRIMO! ~ GOOD JOB and NDEED it looks GREAT! ~ I would be interested in buying a King/Grand Seiko watch - unfortunately - I have already purchased (one of my grail watches) which is the 2018 Rangeman (Japan import) prior to the release to the US market and YES! - I'M LOVING IT! ~ So, I need to wait, but will bookmark, save and favourite this video to remind myself that I have another purchase I need to make.

[@leonardourbano3963]

Any news on the possibility of making our own clear case ? Do anyone knows the exact measurements of it ? I’m interested

[@WatchGeek]

Yes, after New year's I am sending this hand made prototype to one of the producers and they will try to see if they can make it so it costs $50. Stay tuned to the channel and I'll post updates

[@clarksonboy]

Watch Geek have you heard anything from your producer on the case back yet?

[@WatchGeek]

Still waiting, but it should be very soon

[@clarksonboy]

Watch Geek I have a 45-7000 and I would love to get a display case back like this. I can’t wait to hear on it’s availability from you soon!

[@pjmq]

@@WatchGeek Any update on this? Really keen to do this mod on my KS :)

[@ak99515ak]

What price range do you think a ks45 in 85-90% condition is ?

[@WatchGeek]

$500-700

[@whatsonthewrist]

Beautiful face-lift. I love seeing quality movement. Great idea and well done. You have a beauty there. 👍

[@WatchGeek]

Thanks 😊 it really is a joy to look at

[@Autosvijet]

Ja jos cekam da mi se javis za prodaju a ti jos radis oko njega. Super mod to je to 💪

[@WatchGeek]

Haha mislim da ovaj neće u prodaju tako skoro 😉

[@geemeff]

Sweet!!!!!!!!! Coolest watch video I've seen on yt so far, and I've seen lots, right on bud.

[@WatchGeek]

Haha thanks

[@MT-mh8ud]

I’ve got a crack in my seiko sarb035 Hardlex backing can anyone help me with a replacement information

[@xSkormz]

Count me in too. I've got a 45KS. It should fit right?

[@WatchGeek]

Yes

[@niekbeentjes8849]

I have my watchmaker making one at the moment from a other KS back. I have 4 more 4502 KS that would love to receive a clear caseback. So you can count me in aswell

[@niekbeentjes8849]

Same for the 4522 8000 GS :)

[@WatchGeek]

Niek Beentjes yup

[@CartierCrash]

Does anyone know where I can find this back?

[@mrepicpant]

Haseeb khan I just bought one for about $250

[@CartierCrash]

Nolan Cass hey could you tell me where

[@NebraskaGonvilleJones]

Only have just seen your video. Wow! It looks fantastic! I have a King and would love to do the same thing.

[@WatchGeek]

Make sure to check out my review of this watch as well

[@albertaudelo9491]

Does anyone know where this is sold?

[@vancouvervito]

i am interested in the case-back 45gs

[@WatchGeek]

Sadly yahoo auctions Japan is your best bet, or maybe check on the forums if Yobokies or someone started making these

[@vancouvervito]

@@WatchGeek thanks I actually followed your tip and found a guy on yahoo auctions. He’s selling for roughly 240$ Canadian. They don’t accept PayPal - I’m a little hesitant about filling in my credit card info. Nonetheless it’s really the only one I can find and one I’m sure will fit and do it’s job

[@WatchGeek]

@@vancouvervito you can use a proxy service like Zenmarket

[@Clx1]

could you please let me know where you purchased this from?

[@WatchGeek]

The caseback was bought on Yahoo auctions Japan

[@kruzocheuck]

I am interested, will you send it to HK? Thanks!

[@WatchGeek]

Still haven't found a producer to make them

[@nguyenchrishiew]

Great video and the movement is so gorgeous! A wrist shot at the end of your video would've been excellent!! 😊

[@WatchGeek]

I did a wrist shot in the unboxing video, that's why I didn't include it here, sorry 😅

[@JustBlueFish]

That's awesome, movement looks great. Nice upgrade.

[@WatchGeek]

Thanks 😊

[@cristhiantv]

I read that the 6 numbers in the back under the caliber number 4502A had a special meaning, when you have this six numbers that means your caliber is chronometer approved, the dial does not say it because the swiss didn't allowed them to write it on the dial anymore some time after they were able to won the chronometer label , that's why only a few seikos from this era got this label only. Correct me if I'm wrong :/

[@cristhiantv]

I just read the description I think u already knew lol

[@rodsalvador3608]

This could be the one of the finest king seiko 45's in the world! Do you still have it?

[@WatchGeek]

Yup, it's not going anywhere! It still makes me smile whenever I wind it up and put it on the wrist, AND I still oggle at the movement 😉

[@Gravity-u5p]

I’m late to the game but now own one. Where can I buy the replacement case back?

[@WatchGeek]

Sadly only on Yahoo auctions Japan, they pop up from time to time

[@jamesbelan]

@@WatchGeek hi 👋 can you tell me if a 45 7000 (no date) with a very similar condition to your watch, plus ks crown, No buckle, all original parts and serviced to be +10 s per day is worth $750 us dollars?

[@butwait]

@@jamesbelan Don't stare yourself blind at the regulation, any good watchmaker can re-regulate these to +-1 second. but yes, worth it.

[@rottenbue2]

Wow, where can I buy it? Regards

[@WatchGeek]

Yahoo auctions Japan

[@rottenbue2]

@@WatchGeek thanks

[@rottenbue2]

Difficult and rare to find, I keep searching, thanks

[@WatchGeek]

Yes, they pop up once every couple of months on yahoo auctions and cost from 80-150$

[@adambrachtl]

Very nice video man ! P.S. Are there any glass cases but for Seiko Lord Marvel ?

[@ekosableng1194]

where you buy it man? its look amazing

[@AungTH1]

would it work for seiko lord marvel?

[@WatchGeek]

I don't know

[@dudhwan]

Really want to have this transparent caseback.

[@bortoloedoful]

Love this caseback... but can't find it anywhere. OMG

[@niekbeentjes8849]

You already find somebody to produce them for you? Im still in to order 5 right away

[@WatchGeek]

Unfortunately no

[@abelardofernandezmiranda1756]

hello can you tell me the reference number for this case back

[@WatchGeek]

It's custom made by a guy in Japan, you can sometimes find it on Yahoo auctions Japan

[@peterakr]

Absolutely interested. I have a 4502-7001.