Omega Seamaster 300 Ref 165.024,  £25,000 at Arthur Johnson & Sons.

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Some, such as this Ref 165.024 offered for sale by Arthur Johnson & Sons in Nottingham on January 4, can rival the Rolex Submariner 5513 for price.

This particular 1960s watch is a no-date variant with a rare ‘Big Triangle’ and ‘Big T’ dial configuration. Adding further to its kudos are the British military issue markings W10/6645-99-923-7697 A/115/67.

Proof that it is difficult to find one in good condition, bidding reached a multi-estimate £25,000 (plus 24% buyer’s premium).