It's marked Admiralty over the ratchet wheel, the dial facet only provides a serial selection. Mikrolisk has Admiralty as being a trademark of W&D. Funny but these were being widely discounted between collectors For some time and now, their funkiness and luxury are wanted by a good deal of oldsters. https://zaneibrfw.ouyawiki.com/1740867/rolex_watches_for_men_online_an_overview