New South Wales 1871 QV 6d De La Rue Sample Colour Die Proof

1871-1902 QV 6d De La Rue SAMPLE COLOUR DIE PROOF taken in unissued bright blue on glazed card. Fresh and attractive, couple corner bends at top right mentioned for accuracy. Scarce. There are conflicting opinions as to the purpose of these proofs originally thought to have been prepared for display at the 1871 Kensington Exhibition; more recently described as being part of the De La Rue sample colour standards.