World Banknotes

Bank Polski, Government in Exile, a complete set of watermarks for the first De La Rue issue of 1939, comprising papers for 10, 20, 50, 100 and 500 Zlotych, in addition to a copy of the paper for the 500 Zlotych of 1940, glued into two large frames of blue card (three papers per frame), each frame marked PORTALS LIMITED, ink annotations on paper, as produced, extremely beautiful and rare, these being the only examples of each watermark in the Portals archive (6 papers)
Pick 82-86, 98 £800-£1,000

These items are directly from the Portals Paper archive

It is worth noting that several proofs of this issue exist with differing or exchanged watermarks, but those shown here were the ones intended for printing and issue.