Lot 1244
GB 1978 Harrisons dot phosphor trial sheet of 20

Important Great Britain, Including the Steve McGill Grand Prix collection of Machins | S26002
Auction: 11 February 2026 10:30 GMT
Description
1978 Harrisons, ‘dot’ phosphor trial sheet of twenty (5x4) on FPC/PVA (175x146mm) in bright blue, unmounted o.g. odd creasing to piece, otherwise fine, an interesting and rare archival piece.
Footnote
The Post Office in the 1980s began to investigate the possibility of using phosphor dots instead of bands; the reason was unclear and the trials were never implemented onto the issued stamps. .

