Go to http://cuds-on-coins.com/lincoln-cent-1909-1958-rcd/ and look at the 1954S pre-cuds. You may find a match there.
I did find one close, but the mint mark on the obverse didn't have the same placement. I suppose the two dies break down at different rates, so is it possible to have the same die crack on the reverse but different mint mark placements on the obverse?