SG51 Plate 1 Imperf Fugitive Ink Experiment RPS Cert
Image Number: M40696 If you are having trouble ordering this, or any other stamp, please note down the image number and contact us directly. Experiments were do in March 1860 (see DP54) where imperf examples printed in a mauve pink were has been treated to see if the ink was fugitive. This stamp probably comes from those trials. |
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