Watch List notes:

COSTA RICA: AR 50 centimos, 1923, KM-158, Y-43, Countermarked on 1887 CR-GW Costa Rica 25 centimos (KM-127.2), magnificent full luster, NGC graded MS63 on Unc host, ex Richard Stuart Collection. Interestingly, no examples of this type are listed on Coin Archives. Certainly one of the finest, if not the finest known for the type/date.

Estimate: 100-150 USD