198X was a good year! I'm going to say that it is either 1980, 1981 or early 1982 because I don't see any zinc along the edge. Chris
It is a zincoln. Weighs 2.5g, and there is zinc exposed between the 1 and 9 and in the memorial. I wish it was an early 1980 copper. It probably won't last long before it starts to rot!
Shucks! I didn't see anything in your first image, so I thought the others might be affected by the lighting. C'est la vie! Chris