Mexico City, Mexico, cob 1/2 real, 1622/1/0 (D), extremely rare, NGC AU 50, finest and only example in NGC census. S-M18a; KM-unl (22 for type); Cal-unl. 1.60 grams. Off-center obverse with very full date showing clear overdate above bold mintmark oM, good full monogram with full crown above and *-fleur-* below, choice full cross, toned all over, a true "wonder coin" for the type. Pedigreed to the Clyde Hubbard Collection, with his original tag/envelope.
Estimate: 350 - 500 USD