1960 D/D Lincoln Memorial Cent - RPM-001, FS-502.

The date is enlarged (1960) and the mint mark (D) is absolutely tiny and the L in LIBERTY is touching the rim of the coin.

If you were to get this professionally graded you would be sitting on a lot of money but sadly I just don't have that kind of time, but I hope whoever buys this can make better use of it than me.