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Stamp paper watermarks also show various designs, letters, numbers and pictorial elements. The process of bringing out the stamp watermark is fairly simple. Sometimes a watermark in stamp paper can be seen just by looking at the unprinted back side of a stamp. More often, the collector must use a few basic items to get a good look at the ...
True watermark. A true watermark is a recognizable image or pattern in paper that appears lighter or darker than surrounding paper when viewed with a light from behind the paper, due to paper density variations. A watermark is made by impressing a water coated metal stamp or dandy roll onto the paper during manufacturing.
Numerous countries have used a variety of designs for their watermarks as a means to prevent forgery of stamps, making the watermark of particular philatelic interest. In comparison, machine-made paper is made on the Fourdrinier machine by drawing the furnish out of a vat onto an endless wire mesh.
There are two Security printing presses of SPMCIL, namely the India Security Press (ISP) at Nashik and the Security Printing Press (SPP) at Hyderabad. These presses print the 100% requirement of passports and other travel documents, non-judicial stamp papers, cheques, bonds, warrants, postal stamps, postal stationery, and other security products.
Yellow dots on white paper, produced by color laser printer (enlarged, dot diameter about 0.1 mm) Printer tracking dots, also known as printer steganography, DocuColor tracking dots, yellow dots, secret dots, or a machine identification code (MIC), is a digital watermark which many color laser printers and photocopiers produce on every printed page that identifies the specific device that was ...
1856 British Guiana One-Cent Magenta. $9.48 million. Known to philatelists as the "Mona Lisa of stamps," the British Guiana One-Cent Magenta is the world's most famous rare stamp.
The stamped paper has been widely used around the world to collect taxes on documents requiring stampings, such as leases, agreements, receipts, court documents and many others. The papers are bought blank apart from the pre-printed stamp and are available from stationers, lawyers' offices, post offices and courts according to local regulations.
It is possible for a single-color stamp to be inverted relative to watermark, but this is called an "inverted watermark" rather than an "inverted stamp". Depending on the positioning of stamps within their sheet, the invert may be perfectly centered (as with the Inverted Jenny), or offset. Inverted overprint on a 1919 stamp of Siberia