Watch List notes:

El Salvador, 1/2 real, "R" in beaded-circle countermark (Type IV, 1862-63) on a Guatemala 1/2 real 1860R, NGC Good 4, c/s VF Standard, finest and only example in NGC census. KM-83. Richly toned host with well-detailed obverse for the grade, with full and clear countermark, but the reverse heavily worn, very rare in this denomination. NGC #4715687-008.
($350-500)