Lot 1245
GB 1970s-1980s Harrisons phosphor & colour trial proofs

Important Great Britain, Including the Steve McGill Grand Prix collection of Machins | S26002
Auction: 11 February 2026 10:30 GMT
Description
c1970s & 1980s group of Harrisons phosphor and colour trial proofs, including imperforate sheetlet of twelve and horizontal pair, in blue, on PCP/PVAD, two colour trials in bright magenta and ultramarine blue, and four perforated phosphor ‘tagging’ dummy stamps in emerald-green, originating from trial sheets of 100 where the phosphor configurations are in symbols/ characters of ‘@’, ‘%’, a thin bar code and thick bar code, generally fine condition, an interesting lot.

