Greenock, a Mexico, Charles IIII, 8 Reales, 1808th, Mexico City, obv. countermarked j & a muir * greenock ·* around 4/6, 26.35g/12h (Manville 59, and p.116, this coin not listed; D 103; Seaby ST 59). Coin about fine but pierced, countermark good fine (£800-1,000)

Manville lists only one other for 1808th Mexico City. James and Andrew Muir, haberdashers and silk merchants, William street, established 1808