Hope this is in the right place. Recently picked up this advertising mechanical wristwatch, it is advertising SKF Bearings, the dark disc in the centre of the dial rotates with the sweep hand and the 'logo' appears and disappears every 1/4 sweep. There are no indications as to who produced this watch but on the stainless steel screw down case back is 'waterproof Swiss made' and the number 1101 3 at the bottom. The watch is 34mm without the crown and 18mm between lugs, strap size.
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