Carlos III's administration pushed a sweeping monetary reform across Spanish colonial mints in the 1770s and 1780s, standardizing the milled coinage that had been replacing cob money since mid-century. Guatemala's Casa de Moneda was a relative latecomer to the reformed series, and production runs for the smallest silver denominations were correspondingly brief and thin. KM#32.2a distinguishes itself from the earlier 32.1 and 32.2 by assayer initial differences — a detail that collapses the attribution window considerably when the mint mark area is worn.
Carlos III's administration pushed a sweeping monetary reform across Spanish colonial mints in the 1770s and 1780s, standardizing the milled coinage that had been replacing cob money since mid-century. Guatemala's Casa de Moneda was a relative latecomer to the reformed series, and production runs for the smallest silver denominations were correspondingly brief and thin. KM#32.2a distinguishes itself from the earlier 32.1 and 32.2 by assayer initial differences — a detail that collapses the attribution window considerably when the mint mark area is worn.