Mexico 1730-Mo R 1/2 real

from the Mountain Groan Collection

This specimen is a silver cob half real struck at Mexico City several years before the conversion to milled coinage. Specimens with clear dates are unusual. This type is separated from KM 24, struck 1701-28, by its lower fineness; the earlier issues were 0.931 fine silver. Assayer F exists for this date but is rare.

Recorded mintage: unknown.

Specification: 1.69 grams, 0.917 fine silver, .050 troy oz ASW.

Catalog reference: Cayón-8215, KM 24a.

Source:

• 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 Felipe VI, 1474 a 2020, Barcelona: Aureo & Calicó, 2019.
• Menzel, Sewall, Cobs, Pieces of Eight and Treasure Coins, New York: The American Numismatic Society, 2004.
• Michael, Thomas, Standard Catalog of World Coins, 1701-1800, 7th ed., Iola, WI: Krause Publications, 2016.

Link to:

• 1729 ½ real
• 1730-F "royal" ½ real
• 1730-R real
• 1730-F real
• 1730 2 reales
• 1730 4 reales
• 1730-G 8 reales
• 1730-R 8 reales
• 1731 2 reales
• 1732 cob ½ real
• 1732 pillar ½ real
• Coins and currency dated 1730
• return to Mexican hammered and cob coinage, 1536-1734