Rare version, the -4 with the larger bevel on the case back, unique to this sub reference.
The dial is slightly tropical, and has a brown blotch near 10 o’clock
The alpha hands have curved end slots, which I do not see in service hands, (which are square end)
The case back shows the larger first bevel only seen on -4’s.
The bezel is very grey, and correct DO90.
The pushers look original, and the crown is 24 tooth.
The watch comes with an extract. It was serviced some time ago, and does not require immediate service.
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Provenance:Acquired by me approximately 2010
Known work:
Serviced by Swiss Time shortly after acquisition but no documents
Recently checked by Simon Freese
Additional Photos: