PCGS 1905 Indian cent flipover double-struck, with the reverse visible on the coin's obverse, and the obverse on the reverse. The design detail is strong and easy to see, especially under...
PCGS 1993 Lincoln cent with a huge cud reverse. Cuds occur when a portion of the die breaks away due to stresses in the die, leaving a "void" which is filled by the planchet when the coin is struck...
PCGS 1976-S proof Jefferson nickel with a cud die break at 4 o'clock on the obverse. This is a large cud for a proof coin, with proof cuds being scarce since they are made under high quality controls...