Identify which Omega watch this is? And year

This style is very similar to that of old Europe in 1950s and 1960s ~ 56 1, 564,565 style was very popular in 1950s and 1960s ~ Because the photo of the landlord is not detailed enough, it can only be inferred from this era ~ The landlord can also tell which era it is from the model numbers on the back of the watch ~ If the styles are different, the appearance will change together ~ It was round rice earlier ~ I can also say it in vernacular.