As already stated, nice little bit of Die Clash. Personally I think I enjoy finding these errors over others, unfortunately they really aren't that rare, and for that fact anymore valuable to most collectors..but there are some out there that do collect these. Most of the time they really only start increasing in actual $$ value is when the coin is like at least 100 years old or something. But not matter what year they are, at the end of the day they are all still actual real mint errors by the coin collecting (numismatic) community!
My most recent die clash find was this 1973-D, found it a few weeks ago, and I always keep these no matter what date they are!