Small Pwc Perfecta Watch Company Waterproof Incabloc Sub-dial Watch

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Small PWC Perfecta Watch Company Waterproof Incabloc Sub-Dial Watch.The watch is working and keeping good time while I have been wearing it as a secondary watch.It also seems to be a pretty decent quality of 'Swiss Made' watch, with a small and very neat jeweled movement I have not yet identified. Everything about the watch seems to point at it being made for military purpose, with the black dial with what were once luminous numerals & hands, the fact the dial is marked as waterproof, antimagnet...