7½ Euros Caixa Geral de Depósitos; copper-nickel

Caixa Geral de Depósitos, Portugal's state-owned savings bank, was founded in 1876 under the Ministry of Finance to absorb deposits from public entities and channel them into government debt — a function it has never entirely abandoned. The 7.5 euro denomination is a collector-market fiction with no circulation role, used by the INCM specifically to price commemorative issues below the flagship 10 euro silver tier while retaining a base-metal option.