![Image](https://lh4.googleusercontent.com/-8sg3w-ZGn_I/UYpgfT84vEI/AAAAAAAAAO4/RHfJYSd2ghc/s800/penny_1973_offcenter.jpg)
The reverse looks perfectly fine, but the obverse has a very obvious ridge on the left side (I first discovered the ridge by feel). The diameter appears to be uniform standard penny size all around (don't have a caliper to check for sure). If anything it looks like the coin was struck at an angle, with the left side being too low.