NGC 1977-S proof Jefferson nickel struck on a clad dime planchet. The coin is smaller than a normal nickel, with much of the outer lettering missing, and also the coin weighs 2.3 grams (normal for a nickel is 5.0 grams.)
A very scarce error type for proof nickels, with and estimated 12-15 examples known for the Jefferson nickel series struck on dime planchets.
PF69 Cameo with frosted devices, especially on the reverse. Beautiful mirrored fields, and the high grade of PF69 puts this as finest known or a tie.