100 Réis - Carlos I

Carlos I ascended the Portuguese throne in 1889 following the sudden death of Luís I, inheriting a kingdom already deep in fiscal trouble. By 1891, Portugal became the first European nation to default on its foreign debt in the modern era, triggering an austerity program that reshaped public finances for a generation. This small silver piece circulated through exactly that crisis.

The .917 fineness holds — unusually high for a coin of this denomination — carried over from earlier monetary conventions rather than reflecting any contemporary generosity toward the coinage.