Dated Jan 18, 1962, original family Omega with Spiedel band

Hello all, am humbly asking for assistance in valuing my great uncle's Omega wristwatch which was given to him by his wife on January 18th, 1962 for their 25th Anniversary. The watch appears to have a period Spiedel band, and has a gold, not stainless back. The condition is virtually as-new, other than the crystal which is mildly scratched. a There are no other significant flaws, just some fine scratches from normal use. The watch works and keeps time. In my cursory research I have not found a photograph or ad for this exact model anywhere. The watch was purchased in Huntington, Long Island and was in their home here until 1974 when they moved to Sarasota, Florida. In 1996 after Ed passed away, I brought the watch back to New York and it is now located in Huntington, again. I am interested in SELLING THE ITEM, DETERMINING THE VALUE, DETERMINING THE MODEL, AND DETERMINING THE MODEL YEAR. I would assume it is a 1961 model considering the engraving is dated January 1962. Thank you very much for any assistance you could provide.

saw this and it reminded me of Kryten from Red Dwarf (apologies to the poster) and nice watch case

I've never seen this case before, very unique, I'd suggest not selling it, you'll get something like $800 even if its solid gold, there is almost no demand for Omega's and the caseback engraving will make things even harder, even though it's heart melting

To sell, you don't need to have it opened, but try to find the part where it says "14K GOLD" or "14K GOLD FILLED" etc. on the case if it exists - usually its between the lugs