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Some types of embossing, such as that used to make the "cross on oval" design on early stamps of Switzerland, resemble a watermark in that the paper is thinner, but can be distinguished by having sharper edges than is usual for a normal watermark. Stamp paper watermarks also show various designs, letters, numbers and pictorial elements.
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.
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 ...
Barack Obama's birth certificate on security paper.. Security paper is a paper used in security printing that incorporates features that can be used to identify or authenticate a document as original, e.g., watermarks or invisible fibres in paper, or features that demonstrate tamper evidence when fraud is attempted, e.g., to remove or alter print such as amounts or signatures on a cheque.
If a watermark is part of the paper's design, it is the mould that creates the watermark, in the same way that the fine lines of laid paper are created. A watermark is a deliberate thinning of the paper by the placing of either wires or metal shapes, called bits, onto the wire mesh of the mould.
New and enhanced security features make it easier to check the new $5 bill and more difficult for potential counterfeiters to reproduce. The redesigned $5 bill has: [citation needed] Watermarks: There are now two watermarks. A large numeral "5" watermark is located in a blank space to the right of the portrait, replacing the watermark portrait ...