Watch List notes:

Costa Rica, 50 centimos, 1923, Type VIII countermark on a Costa Rica 25 centavos 1875GW (rare host), encapsulated NGC XF 45. KM-156. Lightly toned over muted luster, the grade referring to both the counterstamp and the host, a rather nice example of this rare combination, as this counterstamp is usually seen on later hosts. NGC #2728561-002.
($700-1000)