Mexico City, Mexico, cob 1 real, 1728 (D), very rare, NGC VF details / obv scratched, finest and only example in NGC census. S-M23a; KM-30; Cal-493. 3.25 grams. Well-centered partial cross, off-center obverse with bold 28 of date (possibly 8/7), a few old scratches, lightly toned all over. Pedigreed to the Clyde Hubbard Collection.
Estimate: 200 - 300 USD