If it is a valuable watch and you have no experience, I think you shouldn't try disassembling it. If you want to learn, maybe get an old broken one and practice. You need special tools, too.
Pocketwatch - album - was created on 1990-12-23.
The Yuzu Flower pocketwatch made by DL is a good pocketwatch with a flower on it.
Destroy, dissasemble
Pocketwatch
The White Rabbit
Best left to a gunsmith.
Ask a gunsmith for help
about 20,000 us dollars.
at the top of the tank, you have to dissasemble the tank.
See the Youtube video link below
see the link below for the information you need.
Not meant to be disassembled