Watch List notes:

Medellin, Colombia, 10 centavos, 1886, fineness 0.500, "GRA" and three stars on reverse, very rare, encapsulated NGC AU 55, with WINGS silver sticker, finest known in NGC census, ex-Alvaro Gonzalez (stated inside slab). Lustrous and boldly struck, choice grade (the only specimen graded by NGC so far), a one-year variant with unit of weight (grams) abbreviated as GRA, in fact so rare that no US sales could be traced by us (Dana Roberts had one with the more standard GRAM spelling in similar quality). Acquired from Alvaro Gonzalez, ca. 1973-1975.

Estimate: $1000 - 1500