OMEGA cal: T17, 20F
The beutifully designed "form" calibers for the Art-Deco styled retangular watches from the -30's.
The T17 and 20F share no parts!
- 20F SS 15/16p: 1930 - 1935, 48.300 pcs.
The Omega T17 replaced the 20F in 1934
- T17 15/17p: 1934 - 1943, 167.400 pcs.
- T17.2 S 17p: 1937, 600 pcs. Manufactured by Lemania.
