File:Mexico H3041-31121o.jpg

This specimen was lot 31121 in Heritage sale 3041 (Chicago, August 2015), where it sold for $25,850. The catalog description^[1] noted, "Unique, Previously Unpublished 1758 Mo-MM 4 Escudos. Ferdinand VI gold 4 Escudos 1758 Mo-MM AU50 NGC, Mexico City mint, KM139 (unlisted date), cf. Cal-Tipo 36 (date unlisted). Handsome for the designation with little actual high-point wear and highly lustrous surfaces free of any distracting contact marks. A presumably unique and previously unpublished specimen, missing in all published references and collections reviewed by the cataloguer. A valid parallel can be established between this piece and the Eliasberg Ferdinand VI 4 Escudos 1755 NR-S AU53 NGC discovery piece (ANR 4/2005, lot 1452 for $103,500) of the same denomination and general type: both specimens are in comparable grade and both are previously unpublished dates of a previously known type. While the Eliasberg coin can be perhaps considered more important in view of it being among the first milled issues of that mint, the present coin belongs to a more popular series. Value on a unique and previously unpublished piece is always difficult to estimate, yet suffice it to say that the cataloguer considers it the most relevant addition to the corpus of Mexican milled Colonial gold coins that has been made in recent years. A most exciting numismatic discovery, destined to be remembered as one of the most important pieces in the entire landmark Rudman collection!

A companion piece 2 Escudos 1758 Mo-MM also exists. The only piece confirmed by the cataloguer of that excessively rare coin is plated as No. 1449 in the work Catalogo de la coleccion numismatica Emilio Carles Tolra (Barcelona, 1936). From The Rudman Collection of Mexican Coins."