10 000 Reis - Luiz I Pattern

Pattern coinage under Luiz I was frequently commissioned to test proposed denominations or metal substitutions that never reached circulation — this copper strike almost certainly served as a compositional trial against silver production costs at the Casa da Moeda in Lisbon. The 10,000 réis face value on a 9.53g copper flan is a deliberate mismatch; no one intended this to circulate as struck.

The Gomes reference places it among a documented series of Luiz I essays, which gives it firm catalogued standing despite the absence of official mintage records for patterns of this type.