MEXICO. "Royal" Presentation Cob 4 Reales, 1615/3-Mo F. Mexico City Mint, Assayer F. Philip III. NGC EF Details--Holed. cf. KM-R37.1 (for basic type); cf. Cal-Type 144 (for basic type). Weight: 13.69 gms. The only certified example on either the NGC or PCGS population reports. <strong>IMMENSELY RARE</strong> and possibly <strong>UNIQUE</strong>, this appealing and boldly stuck example exhibits exacting detail. Nearly every design element is strong and the overall coin is very attractive. A hole located around 1 oclock on the obverse accounts for the details designation, but is hardly a distraction for this lovely piece. Despite its shortcomings this handsome presentation coin offers a wholly original appearance with lovely rich patina and minor earthen deposits amongst the devices. From the Pat Johnson Collection.