Mexico City, Mexico, cob 1 escudo, (1714), assayer J, mounted in 18K pendant-bezel. S-M30; KM-51.2; CT-510. 7.26 grams total. Choice full shield and cross (both well centered and almost axially aligned) but peripheries flat, bold denomination and clear oMJ, nearly round, UNC details. With certificate. (Estimate: $1250 - 2000)