both watches have 17 jewel automatic movements
the constellation says automatic chronometer, no date, solid 14k, case opens from front side
the seamaster says automatic and has a day/date, aged very nicely, gold-plated with original bracelet (which i took off to wear it on leather for now)
actually i would like to know more myself as i couldn't find these exact models on the vintage omega site
most of similar seamaster had 24 jewels movements chronometer i reasoned this one didnt because its not labeled chronometer, and has 17 jewels
anyone have any info?