GB1528
9d British Bridges
Four British bridges of historical significance, including the Tarr Steps, Aberfeldy Bridge, Menai Bridge and the M4 Viaduct
GB1526 4d British Bridges
9d British Bridges
GB1530 1s 6d British Bridges
GB1532 1s 9d British Bridges
15 x 14 perfs; polyvinyl alcohol gum; chalk-surfaced paper; two phosphor bands applied in photogravure; designed by Andrew Restall; printed photogravure by Harrison in sheets (6 x 20); 8,773,080 copies sold
Cylinder numbers located in the left margin of sheets by column 1, rows 17 and 18; traffic lights in the top margin by columns 4 and 5, row 1:
black–red-brown–ultramarine–olive-brown–myrtle-green–gold
1A–1B–1C–1D–1E–1F
Polyvinyl alcohol (PVA) gum replaced gum arabic on Harrison printings from this issue onwards
Gold missing
GB1528MCb Ultramarine missing
GB1528PHa Phosphor missing
GB1528PHb One phosphor band (rather than two)
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