30 mm kavalkade...

[hannover_dk]

Fra Ranffts side:

1940-1963, 3000000 (whole family except 269,286)
Breguet hairspring
from 1943 Incabloc
family:
sub second:
260 (Omega 30T2 until 1949): 15 jewels
261: 17 jewels, antimagnetic
262: 17 jewels, excenter regulator
265: 15 jewels, antimagnetic
266,267: 17 jewels, antimagnetic
268: ring- instead screw balance
269: flat- instead Breguet-hairspring
sweep second:
260 (Omega 30SC T2 until 1949): 17 jewels
281: 17 jewels, excenter regulator
283,284: 17 jewels, antimagnetic
285: ring- instead screw balance
286: flat- instead Breguet-hairspring

Så - forskel skal være at den har balance uden skruer med Breguet-hairspring, hvor 286 har flad fjeder.

vh