Titoni Seascopers.
Anthony diver- don’t know much about it, but it’s based on a Squale medium case with Bakelite bezel and ETA movement- small for a pro-diver but wears about the size of a 386 Snorkel or 60’s Seawolf.
Those vintage Titoni divers were a very popular brand of skin divers and are still found all over the tropics. 👍