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| Phosphor graphite imprimatur http://www.gbps.org.uk/boards/viewtopic.php?f=32&t=1842 |
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| Author: | l2ggy [ Tue Feb 22, 2022 11:55 am ] |
| Post subject: | Phosphor graphite imprimatur |
I am looking for information regarding imprimaturs drawn from the 1959 wilding phosphor graphite issue. Were multiple sheets drawn from the print run or only a single sheet examination and subsequently retained by the Post Office/ The Postal Museum? Thank you Colin Davies |
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