Watch List notes:

Costa Rica, 50 centavos, 1890/80GW, encapsulated NGC AU details / rev scratched. KM-124. Interesting muling of an 1885 reverse die (note the engraver's initials CB at bottom) with an 1890 obverse die (also with 9/8 in date, somewhat misleadingly referred to as "1890/80"), lightly rainbow-toned on lustrous surfaces all over, one long scratch across denomination as noted.
($300-450)