Decimal issues of the Chihuahua mint (gold)

KM-410.1 $1 1888 Ca/Mo M (Stack’s Bowers NYINC auction, 12 January 2019, lot 41222)

Diameter 15 mm.1.692 g. 0.8750 gold 

Five pesos 

KM-412.5 $5 1888 Ca M (Briggs & Bustos auction VIII, April 2024, lot 383) 

Diameter 22 mm. 8.460 g. 0.8750 gold 

"Undoubtedly the most iconic date of all the coinage of the decimal system, plagued with rarities in various mints and denominations. The Chihuahua mint struck pieces in denominations of 1 Peso, 5 Pesos and 10 Pesos in gold exclusively for 1888, all extremely limited in terms of mintage and in the case of the one offered here only 120 specimens are reported"

Ten pesos 

Diameter 27 mm. 16.920 g. 0.8750 gold 

Twenty pesos

KM-414.1 $20 1872 Ch M (Stack’s Bowers auction, 23 February 2022, lot 74745)

Diameter 34 mm. 33.840 g. 0.8750 gold