The Omega Seamaster 300, dated to c.1967-69, estimated at £4000-6000 at Fellows.

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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.