Took it to the Omega dealer down the street. Turns out that it is a 1972, older than I thought. I went in to see if it was worth having it looked at to see what service might be needed. Turns out the cost of servicing it, and it doesn't really need it at the moment, costs more than I paid for the watch.

As you can tell from the picture if you look closely, this watch was made for the French market. The day abbreviations are in French.