Great Britain 1934 1½d Photogravure colour trial, SG441var.
A superb example in olive brown, printed on block cypher watermarked paper, perforated 15x14, tied to a large piece of brown paper by a large red boxed London parcel cancel for 'DE.19.1934'.
Very rare, only three examples are know all in different shades of brown.
Accompanied with a 2007 British Philatelic Association (BPA) Certificate of Authenticity.
In 1934 Harrison & Sons regained the contract for printing the low value definitive stamps as well as the commemorative issues. This was due to their pioneering in Britain of the use of the photogravure process for printing stamps.
The main advantages of the photogravure process were high-speed production and lower cost. This was because the original designs were based on photographs meaning a new issue could reach the printing cylinder stage much more quickly than printing plates could be reached by the letterpress process.
Furthermore, double cylinders of 480 were used instead of printing plates of 240 and the rotary machines run much faster.
These ground breaking production efficiency improvements were important at the time to supply the Post Office with the greatly increased quantities required due to rising demand. This was achieved at the same time as reducing costs through economies in production.
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