San Jose, Costa Rica, Banco Central, 50 colones, 28-8-1991, serial E18002635, overprint on back error, PCGS Choice UNC 64 PPQ. SCWPM-257a. The overprint on this error note is correctly oriented yet printed on the wrong side. Excellent paper quality and inking. Pedigreed to the Tamarindo Collection of Costa Rican Error Coins and Paper Money.
($100-150)