Watch List notes:

Colombia, nickel-clad steel 50 centavos, 1978, multistruck with brockage on reverse error, NGC Mint Error MS 66. Restrepo-424.9; KM-244.1. Obvious error coin with a relatively correct (and quite brilliant) obverse while the reverse is flat with distorted and faint incuse details from the obverse of another coin that this coin was repeatedly struck over. NGC #6288552-028. Pedigreed to the Bernal Collection (stated on label).
($100-150)