In the Queen Victoria Great Britain surface printed issues, the practice was to print six preliminary sheets for each plate as it was completed. One sheet was kept for record purposes in the archives (imprimatur, q.v.) and the others were often perforated and issued. In many cases these stamps differed in either colour, paper, watermark or perforation from the subsequent regular issues, and were consequently 'abnormals' and became prized rarities.
(Latin: 'Let it be printed.') The first authorized sheets from a plate finally approved. 'Imprimatur' sheets are placed in the G. P. O. archives in Great Britain.
- R. J. Sutton 6th edition revised by K. W. Anthony
The Stamp Collector's EncyclopaediaPublished 1966Posted January 8, 2000
Index of 507 Notes from the Past
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