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M218a J Whatman 1921 laid

M218a J Whatman 1921 laid

NOT AVAILABLE AS ALREADY SOLD
This is a fairly straightforward double faced laid Whatman pair of moulds made by W Green Son & Waite (date unknown). The brighter bands are probably caused by optical interference between the two layers of laid wire.

© Copyright Simon Barcham Green 2011. Not to be copied or reproduced without written permission

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