When I hold it at just the right angle, the first digit looks like a 2. Anyway, thought I'd share. The shaded area is not glue, I gave it a bath in acetone.
the date would be where the surface disruption is - but I can't tell from the one photo if it's from damage (scraped) or a slight chance it's from a filled die. Based on the one photo,and the verdigris and change of surface texture, I lean toward damage.
I agree that this looks very much like a struck through grease coin. I originally thought PMD but don’t see zinc.
IMO struck January 2nd, 2000. 1st shift. Operator still hungover. Couldn't remember what year it was. How's that for great detail? LOL