It is a correct watch - the caliber 711 (an ultra-thin created by Omega in conjunction with Blancpain / Rayville and Piguet) was mated by Bienne with the 151.0039 case. It's an early 70's watch, 1972 by the serial number, which jives with the time these were produced. The dial may or may not be a later service replacement - not sure because the fonts of the 70's and the fonts of the early 80's dials that were made as replacements were practically the same. If it's a franken the person who put it together knew what they were doing. I like these thin DeVilles and think you got a pretty good deal.
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