Have an option to buy a YG memovox, ca 1962, cal. 825, black dial - however the rectangle in the middle ring is solid filled with lumen and you can’t see a “Swiss Made” sign on the bottom below the six. Would that be a re-painted dial? Can it be restored and what would be the “negative”value on the watch? Otherwise the watch is in superb condition. Asking price is 4.3k€. Thanks to the Memovox gurus here for any help!