Page 61 - Jarvis & Wright: Jamaica Display to RPSL
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Jamaica: Laureated Head of Queen Victoria
Proofs
6d Design Die Proof
Final (8th) State
Two Die Proofs with “BEFORE HARDENING” are known, both dated Sept. 14 1860.
Ink Recipes
In the 1870s and later De La Rue documented the ink colour mix for each issue and printed dummy stamps.
