Hi looking at this 19 jewel, 16 million movement number watch. I think it's a 501 cal. Did any of this era have painted Omega logos? Best, Ian
This logo does no belong to the period the watch was made. So redial, or maybe dial replacement. By the way, the hands have lost their lume, and there is no lume on the dial - another reason to think there is a problem with the dial!