p211_p212
Paper varieties viewed under long wave light.
BCP = Bluish coated paper PVA = Polyvinyl alcohol acetate gum
OCP = Original coated paper
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P211 - 7d Emerald green, BCP/PVA, two 4.75mm screen 150 phosphor bands, upright print (Cyl 3) - Deegam PD 8.1.1 - S.G specialised U19 - Stoneham M36 - Concise 737

Bluish coated paper, screen 150 phosphor bands from cylinder 3 [1.7.68]

P212 - 7d Emerald green, OCP/PVA, two 4.75mm screen 150 phosphor bands, upright print (Cyls 3, 4) - Deegam PD 8.1.1a

Original coated paper, screen 150 phosphor bands from cylinders 3, 4

P212mp - 7d Emerald green, OCP/PVA, phosphor omitted, upright print (Cyl 3) - Deegam PD 8.1.1b - Stoneham M36a

Original coated paper, phosphor omitted from cylinder 3