The peseta was a unit of currency in Spain on Earth.
During a single massive meal at Las Cadenas, a restaurant in 20th century Seville, Shockeye of the Quawncing Grig and the Second Doctor, who had been transformed briefly into an Androgum, ran up a bill of 81,600 pesetas. Shockeye's attempt to pay with a twenty-narg note was unsuccessful. (TV: The Two Doctors)