Bogota, Colombia, 16 pesos, 1840RS, encapsulated NGC AU details / obv graffiti, reverse damage. Sed-18; Restrepo-211.7; KM-94.1. Lustrous and well struck but with hand-engraved "JFM" on bust and zigzag test mark (just like for El Salvador a couple years prior, perhaps related?) on reverse field. (Estimate: $1000 - 1500)