1971 MACHIN'POST OFFICE' PHOSPHOR REMNAL'IMPERF' TESTING TRIALS 1½p, 2d, 2½

1971 MACHIN'POST OFFICE' PHOSPHOR REMNAL'IMPERF' TESTING TRIALS 1½p, 2d, 2½d endorsed'Abet' (Acetone,, Butanol, Ethyl, Acetate, Trichloroethylene, being the chemicals applied). Norman Potter Archive with photostat of this report Our reference. We exhibit at all the major UK stamp shows. Visit our website to sign up to the newsletter for special offers.

This item is in the category "Stamps\Great Britain\Elizabeth II\Decimal (1971-Now)". The seller is "embassy-stamps" and is located in this country: GB. This item can be shipped worldwide.

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