I'm helping my sister sell some of my brother in laws watches. He has this Hamilton, 10K case with inscription on the back for service 1945 - 1965. I'm guessing the watch was made in the 60's but have no clue. Serial number on the movement is X175841. Any help determining the value will be appreciated. I also have a Omega quartz, Breitling Chrono from 1977 - box all papers and receipt plus it has the time zone watch on the bracelet.