Omega DeVille 18mm
My mother recently gave me an Omega DeVille that was a gift to her sometime in the 1970's. The serial number is 551008. There is also a marking on it that states 29/81 and "AB386." The watch is 18k gold with a 14K gold band. There are diamonds at 12 and 6 o'clock. Please refer to the attached photo. I would greatly appreciate your opinion on the value. Thank you!