I do not have tool for back.

No writing on case visible except for the back

Winds

Sets

Ticks a second then stops in certain positions.

I believe this has a bad balance staff

Dial says

Neptune

Waterproof

Shock resisting

Swiss made

Crown signed oyster patent and screws down fine to the case

Case is 30mm not including crown.

Lugs appear shaved down.

Sold as is for parts repairs only