El Banco Central de Reserva de la Salvador, specimen 50 Colones (2), 3 May 1979, serial number A0000000, and 19 June 1980, serial number YA0000000, each with red SPECIMEN overprint and De La Rue seals, and three cancellation holes, uncirculated, and both available signature and prefix combinations for this issue (2 notes)
Pick 131as, 131bs £120-£160