Lot 30223 – 1974 Bradbury Wilkinson « all over phosphor » trials

1974 Bradbury Wilkinson « all over phosphor » trials for the British Post Office on Lundy Puffin stamps, with three part sheets of 70+, one in red with 4p and 5p printed in top of each other, one with 4, 4 1/2, 5 and 5 1/2 printed on top of each other in different colours with ms « 7 passes » at top left, and 5p in rose with ms « 2 passes » at top left, all three with the printer’s inscription at foot

Note: See footnote in Jon Aitchison’s « Stamps and Postal History of Lundy Island » p.104