These 9k Dennison Seamasters from the mid 1960s turn up on the UK market from time to time, and seem to fetch between £900 and £1200 GBP. I was intrigued, because I already knew that Dennison stamped the last three digits of the case serial number on the back edge of the case near a lug (usually the lug with the hallmark), but I had not realised that they also stamped it underneath the bezel. So we learn something new everyday . . .
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