2913.8a 2nd Large M18L MAIL 2018 Walsall blue phos, yellow fluor

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Great Britain

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2nd class Large blue Machin security stamp 2018 counter sheet M18L

The 2nd class Large letter stamp from was reprinted on 14/02/18 by ISP Walsall.  In this printing the phosphor reacts with a blue glow under ultra-violet light.

A second printing was made on 30/07/18 which has phosphor glowing blue, and the transparent security ink fluorescing yellow.  (See photo comparison)

SG  (previously U2959, also used for previous years)

Formats available
: (if your choice is out of stock please ask)

Singles & multiples
Cylinder blocks of 6
Date blocks of 8 - 30/07/18

£1.20 inc. tax

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