World Banknotes

El Banco Central de Reserva de la Salvador, watermarked paper as used for the 1 and 5 Colons of 1955-60, showing the bank name, paper with a security thread, glued into blue card frame, ink annotations on paper, as produced, extremely rare and probably unique this being the only example in the Portals Archive
BNB B1016, B1018, Pick 90, 92 £80-£100

These papers come directly from the Portals Paper archive