Stock

72285

1971 MACHINS ‘POST OFFICE’ PHOSPHOR ‘IMPERF’ TESTI

Ref Nº : E72285
Lot Nº : 596

£2,400.00

1971 MACHINS ‘POST OFFICE’ PHOSPHOR ‘IMPERF’ TESTING TRIALS (Ex. Norman Potter ‘Archive’) ½p – 6p, (10 values). Each treated with ‘BET’ (butanol, ethyl acetate, trichloroethylene) A unique & important item. (comes with photostats of the four page report ‘Potter’ made).

Description

1971 MACHINS ‘POST OFFICE’ PHOSPHOR ‘IMPERF’ TESTING TRIALS (Ex. Norman Potter ‘Archive’) ½p – 6p, (10 values). Each treated with ‘BET’ (butanol, ethyl acetate, trichloroethylene) A unique & important item. (comes with photostats of the four page report ‘Potter’ made).

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