How to Authenticate Hermès Birkin Bags (Secret Vintage Collection)

Am former fashion blogger and fashion writer with Huffington Post.
Creates these authenticity videos by request xxx
Ig: @vivmaisonvogue

[@califemme3]

You are a total bag connoisseur! I am curious to know on both current Hermes and Chanel bags what metals are the hardware? I know Hermes silver is palladium but is the gold actual gold? Chanel gold was once gold plated but what is it now? Especially curious to know what their shw metal is too... Thank you :)

[@BagBravado]

Your bags are so precious! Wishing...