17jewel marked 17 jewel Tritium so no later then 1998. What’s the serial number resolve to checked against a chart?
Unless that’s an 18th jewel. Then it’s a 98 or 99. I can’t tell from the picture.
Place the watch so you can read Omega on the movement in normal orientation. Look at the silver triangle above it. Is the circle below the screw silver or purple? If purple it’s the 18th jewel. Your picture makes it hard to tell.
Click to expand...