Watch List notes:

Costa Rica, nickel 10 colones, 1975, 25th anniversary of the Central Bank, struck with filled dies, NGC Mint Error. KM-204. Full central design including date, the rest obscured from debris on the dies, still lustrous and probably UNC despite lots of small marks. NGC #1527016-009. Pedigreed to the Tamarindo Collection of Costa Rican Error Coins.
($200-300)