New Zealand 1870–1890 - Bank of New Zealand £1 Green Specimen (Pick S191s)
The note was produced as an internal printer’s specimen for archival retention and audit purposes. A perforation reading 'SPECIMEN B.W & Co LONDON' is applied across the lower central area, executed through pin-perforation rather than ink overprint, serving as the primary method of specimen invalidation and identification. At far left, a wide vertical audit margin remains intact, a characteristic feature of printer’s file copies retained for inspection, documentation, and internal reference within Bradbury Wilkinson’s production system. Read more →