400 Escudos

Spain's 1868 escudo series sits at one of the more abrupt fault lines in Spanish monetary history. The escudo had been introduced in 1864 as part of a decimalization reform, replacing the real at a rate of ten reales to one escudo — but the denomination barely had time to establish itself. The September 1868 revolution that overthrew Isabella II also brought a currency reset: the peseta system was adopted in 1869, rendering escudo-denominated notes obsolete almost immediately after this one was printed.

The Banco de España's in-house workshop handled production, which was not always the case for high-value notes of this period — foreign firms like Bradbury Wilkinson were frequently engaged for prestige issues. That this was printed domestically at such a transitional moment is itself a minor operational detail worth noting.