In Dr Alan Stevensons definitive book on page 86 he quotes Blue Frames—-thin frim blue lines round the figure and the gutters. A blue outline of a triangle appears at the back and often at the front when it gives the impression of the stamp being printed in two colours. This is the most interesting and the rarest variety of this stamp in blueing and paper.
COGH SG1a 1d Deep Brick-Red Blued Paper PB Printing FRAME VARIETY
Sale!£230.00
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