Watch List notes:

Mexico City, Mexico, cob 1 real Royal, 1643/2P, extremely rare, Plate Coin in CT. S-M19; KM-R28; CT-1007. 3.50 grams. Unbelievably broad (28mm) and thin flan, also incredibly unholed, with 100% full details (as you would expect for a Royal) in a rustic style per the era (nothing like the 8R Royals), AU or better with gorgeous, deep, rainbow toning, probably unique, but certainly unique in quality and of almost unlimited value to the specialist collector. Note that, despite the clear overdate, this is listed in CT as clean 1643. Plate Coin on page 344 of Calico's Numismatica espanola (2008). ($5000-10000)