El Salvador, 1 real, R-in-beaded-circle countermark (Type IV, 1862-3) on a Guatemala 1 real, 1860R, NGC VF 20, c/s XF standard. KM-89. Bold, nearly complete XF countermark on Carrera's neck of a circulated host coin, fairly rare type and uncommon in this grade range without problems.
Estimate: 150 - 225 USD