Browse Listings in Machin Selected Items. (see also MachinStamps.co.uk) > Decimal Machin (pre elliptical) > Harrison PCP/PVAD
20½p ultramarine PCP1/PVAD. 17 pin perforation error
Fine pristine unmounted mint marginal block of six with 17 pin perforation error on middle pair. Scarce circa 15 known.
£325.00
IanLasoksmith