Guatemala (countermarks and counterstamps)
Guatemala, 4 reales, sun-over-mountains countermark (Type II, 1839, contemporary counterfeit) on cross side of a Potosi, Bolivia, cob 4 reales, 1760V-(Y).KM-85.6.13.08 grams.Very bold and deep countermark (VF) with slightly inaccurate details to upper right of VG host's off-center cross, bold date on other side, toned in crevices, scarce without hole.
Estimate: 150-225 USD