TISSOT cal: 27 - 27.61T
Versions:
- 27: sub second. no shock protection.
- 27 PC: sub second, shock resist.
- 27 PC SC: sweep second, shock resist.
- 27-1: sub second, incabloc. (1949 - 1951).
- 27-2: sweep second. (1936 - 1938).
- 27-3: sub second, shock resist. (1940 - 1942).
- 27-23: sweep second, shock resist. (1940 - 1942).
- 27-53: chronograph 60 s Mediostat, shock resist. (1940 - 1942).
- 27-63: sub second, date hand, shock resist. (1944 - 1945).
- 27-7: sub second, super shock resist. (1948).
- 27-T: sub second. (1950 - 1952).
- 27-1T: sub second, incabloc. (1950 - 1952).
- 27-2T: sweep second. (1950 - 1952).
- 27-21T: sweep second, incabloc. (1950 - 1952).
- 27-61T: sub second, date hand, incabloc. (1950 - 1952).
