Quetzaltenango, Guatemala, 8 reales, Type I countermark (1838, rare) on a Potosi, Bolivia, cob 8 reales, 1772V-(Y), ex-Richard Stuart. KM-77.5. 26.27 grams. Countermark is Mint State and fully detailed (particularly rare thus), the host a typically chunky VF with edge-cracks, light toning. Pedigreed to the Richard Stuart collection. (Estimate: $400 - 600)