 The 50-sentimo and 2-piso denominations were reintroduced, the latter of which had not been struck as a coin since the Spanish had struck it in gold.The 5-piso denomination was stopped, but production resumed (in a new, smaller size) in the final four years of the "Flora and Fauna Series", which featured reduced sizes for all denominations.The "Flora and Fauna" series contained errors on two coins, in 1983.