Mexico
Ferdinand VI gold 4 Escudos 1757 Mo-MM XF45 NGC, Mexico City mint, KM139, Cal-714 (prev. Cal-114). The first of only three dates to see the use of this bust type for the denomination, and one that remains notably elusive to collectors. The present coin represents only the third we have offered, the last being the Rudman specimen, which graded VF35.
https://coins.ha.com/itm/mexico/mexico-ferdinand-vi-gold-4-escudos-1757-mo-mm-xf45-ngc-/a/3091-32668.s?type=CoinArchives3091
HID02906262019
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Estimate: 1000-1500 USD