wd26
FCP = Fluorescent coated paper PVAD = Polyvinyl alcohol acetate dextrin gum
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WD26 - Wales 8p red, FCP/PVAD, two 4.75mm B3 phosphor bands (Cyl 1) (Harrison/photo) - Deegam W80.1.1 - S.G specialised XW36 - Stoneham WA35 - Concise W25

Two 4.75mm B3 phosphor bands from cylinder 1 [23.1.74]