25 Centimos - Alfonso XIII Pattern

Alfonso XIII patterns of this period emerged from Spain's ongoing struggle to replace its copper-nickel small coinage with a stable nickel alloy series — a project repeatedly delayed by disputes between the Treasury and the Mint at Madrid over alloy sourcing and striking pressure requirements. This 1907 piece was never adopted for circulation; Spain ultimately continued issuing the 25 céntimos in cupronickel through the established Barcelona contractor arrangements rather than transitioning to a pure nickel blank.

The Auréo reference places this among a small documented group of Madrid Mint trials from that year.