Koninkrijk der Nederlands, proof for 5 Gulden, ND (7 August 1914), uniface, green print, no text, perforate horizontal and vertical lines, proof for 2.5 Gulden, blue print, no signatures, date or serial number, first with one hard fold, extremely fine, second with some light handling, about uncirculated (2 notes)
Pick 6p, 12p for design £100-£150