Here is a proof that is more in line with my overall interests in collecting copper. A total of 600 mintage is estimated, including both the Closed 3 and Open 3 varieties. It is unknown how many have survived.
This nicely toned 1980s proof Nickel. I've had this for quite a few years. I can't find a photo of the reverse at the moment. But it's evenly toned just like the obverse.