Mexico (1541)-Mo F/P 4 reales
"MEXICO. Carlos and Johanna, Early Series. 4 Reales Assayer G, Right Mintmark is M over F over P (oMo-oM/F/Po), ND (1541) Juan Gutierrez. An EXTREMELY RARE and highly important over assayer variety, as it is a key component in die linking the early series. This coin played a major role in re-assigning the chronology of assayers for the early series, as the reverse die shows clear evidence of usage during the tenure of three different assayers. The re-usage of this reverse die indicates production of this piece in 1541 during the first year of Gutierrez term as assayer. Well struck with virtually full legends and central design, lustrous surfaces with a touch of corrosion on the reverse. CHOICE VERY FINE, nearly EXTREMELY FINE."The "Carlos and Johanna" coinage of 1536-55 is complicated and difficult to disentangle as records are sparse and the coins are not dated. Ponterio gives details of the latest research. The early series of 1536-41 is rare in all denominations.
Recorded mintage: Unknown.
Specification: 13.53 g, .931 fine silver, .399 troy oz ASW.
Catalog reference: KM-17; Nesmith-unlisted; Cal-type-48 (unlisted over assayer), Cayón-3101.
- Krause, Chester L., and Colin R. Bruce II, Standard Catalog of World Coins: Spain, Portugal and the New World, Iola, WI: Krause Publications, 2002.
- Cayón, Adolfo, Clemente Cayón and Juan Cayón, Las Monedas Españolas, del Tremis al Euro: del 411 a Nuestros Dias, 2 volumes, Madrid: Cayón-Jano S.L., 2005.
- Calicó, Xavier, Numismática Española: Catálogo General con Precios de Todas las Monedas Españolas Acuñadas desde Los Reyes Católicos Hasta Juan Carlos I, 1474 a 2001, Barcelona: Aureo & Calicó, 2008.
- Menzel, Sewall, Cobs, Pieces of Eight and Treasure Coins, New York: The American Numismatic Society, 2004.
- Ponterio, Richard, and Kent Ponterio, Ponterio sale 150: The 2009 Los Angeles ANA Auction, Irvine, CA: Bowers and Merena, 2009.