South African Reserve Bank, two sheets of watermarked papers as used on the £5 (8) of 1921 and the 10 Shillings (15) of 1926, along with a single large watermark for a South African stock certificate, the latter glue into a glue card frame, small annotations, as produced, rare (23 papers across 2 sheets, plus extra)
BNB B704, B707, Pick 76, 79 £500-£700

These papers come directly from the Portals Paper archive