Worlds smallest Ukulele? (improved prototype)

After making a 97mm prototype of a miniatur Ukulele (which was not tuneable and had no maximized resonance chamber) I made 3 more at the same size.
But this time the body sidewalls are sanded down to about 0,5mm to 0,8mm thickness and the beechwood veneer (0,3mm thick 3 ply) bottom ant top sheet is sanded down to 2 ply, so the small body has maximum resonance chamber.
The body itself and also the neck and the headstock is made of the same 5mm thick 10 ply aviatic plywood (birch).
I've even managed it to make functional friction pegs made of 1,2mm thick brass wire. Drilling a 0,7mm transverse hole (to wind up the string) and hammer one end to a flat head to (hold/twist the peg which is about 7mm long in total) was a real chalenge! I have no CNC or any mill for building this ukulele miniatures. I used a Fretsaw, some sand paper, a knife, some small files, a Dreml and a small battery hand-drill. And my 2 hands.
The result is the probably tiniest tunable Ukulele on earth.
Okay, it's got just 2 strings. Pressing any chord (in this scale) on more than 2 strings wouldn't be possible (even with just 2 it will be hard) anyway, so I decided that 2 strings is enough.