There are at least four dial types, four styles of hands and perhaps a dozen different bezels.
The reference 165.024 pictured here is dated to c.1967-69. Its salient features are a screw down crown, sword hands, a dial with a small triangle at 12 o’clock, white numerals and a big date aperture.
At the Luxury Watch Sale at Fellows in Birmingham on March 21, it has an estimate of £4000-6000.