10 Réis Pattern strike

Brazil's 1869 pattern coinage was part of a broader governmental push to modernize the imperial monetary system, with copper-nickel being tested as a replacement for the pure copper that had dominated low-denomination issues. The copper-nickel trials of this period were never adopted for circulation — the empire ultimately retained copper for its minor denominations until the monetary reforms that followed the republican transition of 1889.

KM#Pn133 is one of several pattern denominations struck that year, most in extremely limited numbers for official examination rather than public distribution.