The dial print is based on the 6542. The serial range seems to between 503,xxx to 505,xxx and normally carry a I.60 case back stamp. Min is in the middle with the I.60 case back. The SCOC follows after. Some say the there is an overlap I don't know. But w...
. . . about this one, Bill? No hidden agenda or 'gotcha' here . . . I'm just curious. This one belongs to a friend; acquired second hand in the early '70s, movement D709306. Art ...