NGC 1977-S proof Jefferson nickel clashed dies obverse and reverse. The clash marks are strongest on the reverse, but also pretty strong on the obverse.  PF68 Ultra Cameo

NGC 1977-S proof Lincoln cent clashed dies obverse and reverse. Clashed dies are scarce on proof Lincoln cents.   PF67 Red Ultra Cameo.

NGC 1977-S proof Lincoln cent with strong clashed die obverse and to a lesser degree on the reverse. Clashed dies are scarce on proof cents.   PF67 Red

NGC 5c 1976-S proof Jefferson nickel with a cud obverse at 5 o'clock. The cud is large for a proof coin, with all proof cuds on Jefferson nickels being rare, and with few known. This particular cud...

NGC 1977-S proof Jefferson nickel double-denomination struck on a 1977-S Roosevelt dime. The coin shows the dime design under the nickel, and also it has a reeded edge. It is the weight and metal of...