^Lot 647 MEXICO, Mexico City, cob 1 real, Charles II, assayer not visible, round with deep void in edge and l

MEXICO, Mexico City, cob 1 real, Charles II, assayer not visible, round with deep void in edge and large hole. KM-29; Cal-Type 49. 3.26 grams. Not much detail but a very cute shape with natural narrow bubble hole in edge creating a "mouth" combined with a large hole for an "eye," lightly toned VG+. With collector tag M-S3-66 ("Turtle Head").