Hello. I am trying to find information on a vintage Seamaster DeVille. The watch in my possession is owned by a friend of who is the original owner. He says that it was bought from a jeweler in NY or NJ sometime in the 60's. He is adamant about the case being 18k gold and that it has never been serviced other than to have the leather band replaced. I am hoping to narrow down the details of the watch so that we can accurately (to the best of our ability) describe the piece for the purpose of selling it. Since it has not been opened, we do not have a serial number or movement information. I visited a local Omega boutique to gain some knowledge, but only left with more questions. The boutique manager said that the Watch was likely made sometime between 1961-1967 and that they were not making 18k versions until after this timeframe. He said that it was 14k. I humbly disagree with him, but then again, everything that I know about Omega watches has been learned in the past two weeks through reading this forum! I have seen Watches for sale that look similar to this piece with phrases like gold plated, 14k filled, and 18k solid gold. Any guidance as to what we have here would be greatly appreciated!