That's a very strong 8/7--probably one of the strongest on
US coins!

Back in the day, I wonder if collectors even noticed, perhaps they saw it as nothing more than a mistake?

As a collector of overdates, I wish I could go back and pick these out of pocket change.

I also like how the 8/7 has "horns". Here's a montage of overdates I've made. Most are mine--except for the real expensive ones.
