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Colour proof of 4 sk. 1854 plate IV, with missing imprint on the left side of the design and likely from the left column of stamps, without gum and burelage IIb printed in blue colour and dotted spandrels. In the Postal Museum the printing plate has empty spandrels in the lower half sheet of 50 stamps. Plate IV has been used for the last 1854 printing IV delivered from 16 June 1859. It is not known why this plate has had the spandrels removed, but perhaps experiments were made for a new design without spandrels and trials for another burelage colour since the yellow one that were used were sometimes almost invisible.