Postby Ag999 » Thu Jun 08, 2017 6:31 pm
J.N. Jacopo (I know, it looks like Jacobo, and that's an "N" not a "V").
"The Jacopo brothers operated a silverhouse in Mexico City called Arte en Plata, later to be renamed as Joyas de Plata. Many items they sold were made by independent silversmiths located in Taxco." (Mexican Silver Hallmarks book)