Art Deco Watch

by Rachael Hunt
(Ashford, middlesex, UK)

Hi, i have what seems to be an art deco watch the markings on the reverse are

18 - whuch is vertical, then .75 horizontal

a box with a circle in and the letter u
another box with the letter i

then GS
then the number 42814

I have taken 2 photos to help you, unfortunatly the hallmarks are not clear in the photos

the glass is missing but it is still pretty
I appreciate any help yuo can give me

many thanks

Rachael Hunt