Unrecorded watermark, colour shade and perforation variation in philatelic issues commemorating the World Youth Stamp Exhibition (2014) from Malaysia
A watermark is applied to an official paper document of value, such as postage and revenue stamps, bank notes and passports, as a device to reduce counterfeiting (Mackay, 2003). Typically, it comprises a pattern, image or letters that appear when viewed under transmitted light, or via reflected ligh...
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| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Philatelic Society of Kuching Sarawak
2016
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| Online Access: | http://ir.unimas.my/id/eprint/12850/1/Das%20I..pdf http://ir.unimas.my/id/eprint/12850/ |
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