blue-black overprints on penny lilac

Material relating to the philately of the reign of Queen Victoria.
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MIKE
Posts: 75
Joined: Sun Feb 07, 2016 1:44 pm

blue-black overprints on penny lilac

Post by MIKE »

Could anyone advise on the best method of identifying the listed blue-black version relating to the Victorian 1d lilac overprints.
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