PCGS 1966 Lincoln cent 1st strike mirror brockage, with a mirror brockage of the obverse on the coin's reverse. The coin is also a rotated double-struck, with an underlying strike plainly visible on the coin's obverse, with much of Lincoln's design, the date and some of the lettering visible. The coin has "3" obverses, including the obverse having two strike and then the mirror brockage of the obverse on the reverse!
The double-strike is why much of the mirror brockage was overstruck and no longer visible. However, the 1966 date (at 11 o'clock reverse) of the brockage, portions of "LIBERTY" (at 6 o'clock reverse.)
Very rare, and one of the few examples we've seen of this error combo.