Overprint (postage stamp)
As pressure a pre-recessed after the actual pressure of the second pressure stamp is referred to, which extends over the entire print sheet. Usually it is a delicate color print, which is sometimes used to improve the image effect, but more often as a security or protective overprint.
The aim of preventing forgeries of postage stamps to the detriment of the post office was z. B. colored network overprints, as we find them with the postage stamps issued in the Kingdom of Hanover in 1856 .
A special form of overprinting is the barely visible chalk print , which was mostly applied in a grid or diamond shape and should help to significantly increase the sensitivity of the mark surface to chemical manipulation. So they wanted to prevent devaluation characteristics ( postmark , Federzugentwertungen) and this a second time for the distance of stamps franking of mail items could be used. The application of glossy lacquer strips found on Austrian postage stamps between 1901 and 1905 also served this goal.
The beginning of the use of electronic mail sorting and stamping machines made it necessary to prepare postage stamps in such a way that they could be recognized by the processing machines on letters and postcards . This was the only way to correctly set up mail for machine stamping or to sort out unstamped mail. In addition to the possibility of printing stamps on fluorescent paper or with fluorescent inks, some countries also used overprinting with phosphor-containing (fluorescent) strips on the front of the stamp . We find such phosphor strip overprints on postage stamps from Great Britain (since 1962) and France (since 1963). Overprints with Naphthadag (often written Naphtadag ) strips ( graphite- naphtha solution) were rarely used. We find them on UK brands from 1957.
The term overprint is sometimes used for the overprints often found on postage stamps , but a clear distinction should be made here.
literature
- Wolfram Grallert: Lexicon of Philately , 2nd edition, Phil * Creativ GmbH, Schwalmtal 2007, ISBN 3-9321-9838-7 .
- Michael Böhme u. a .: Instructions for imparting philatelic knowledge. Edited by Deutsche Philatelisten Jugend e. V. , Young Collectors Publishing House, Bonn o. J.
Individual evidence
- ↑ Michael Böhme et al., P. 130.
- ^ Phila-Lexikon, accessed July 2012