Curacao - 5 Gulden (type 1918-20)/1920, De Curaçaosche Bank Black on orange underprint. Printer: Johan Enschedé en Zonen. Signatures: J.A.P. Thielen & H. Schotborgh. Serial number: 33217.P. 7E; PLNA8.1bRRRR. Of the highest rarity. PMG VF25 NET. Foreign substance