GB 1973 SGX844var Colour Trial for the Jumelle press
Stock Code: P14511948
1973 1p Harrison Colour Trial Proof. Very fine unmounted o.g. imperforate colour trial printed in Olive-grey, produced as a proof for the "Jumelle Press" in specially prepared sheetlets of four, this being a bottom marginal example. Printed in the issued 3½p colour (SG X858). Scarce.
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