Watermarks - U.S. Stamp Catalog and Identifier
What are watermarks and how are they made? The History of Watermarks on U.S. Stamps; Faked Watermarks; How do I detect a watermark? Watermark detection fluids; Eight Possible Orientations for the Watermarks
Watermark - Stamps of the World
Watermarks on postage stamps and stationery. In philately, the watermark is a key feature of a stamp, and often constitutes the difference between a common and a rare stamp. Collectors who encounter two otherwise identical stamps with different watermarks consider each stamp to be a separate identifiable issue.
How to identify a stamp by its watermark - Linns Stamp News
1998年10月5日 · Identical stamps that have different watermarks are considered different stamps. For that reason, collectors must be able to see and identify the watermarks on the stamps they collect. The most common method of watermark identification is shown in Figure 2.
Check watermarks to identify valuable stamps - Linns Stamp …
2021年4月30日 · Major stamp catalogs provide individual listings for stamps of similar designs printed on papers with different watermarks. There are many examples where the value difference between two similar stamps with different watermarks, or a watermarked stamp and an unwatermarked stamp, can be quite substantial.
All About Watermarks on Postage Stamps - Mystic Stamp …
Discover everything you need to know about watermarks on your stamps. What is a watermark? Watermarks are letters, symbols, or patterns impressed into the paper used to print stamps. Which stamps have watermarks? Many older US stamps have watermarks in the shape of a single- or double-line “USPS.” Modern US stamps do not have watermarks ...
Expertizing Basics - Watermarks - American Philatelic Society
2021年12月6日 · Watermarks are a security measure incorporated in stamp paper to deter counterfeiting. Watermarks may be words, letters or symbols and are formed from dies attached to the frame used to make paper from pulp. The dies result in thin places in the paper.
Watermarks - A Philatelic Introduction - American Philatelic Society
2022年3月31日 · They consist of the large letters “USPS” in different fonts repeated in lines across a sheet of stamps, and are notoriously difficult to see, as in most cases only a part of a letter is visible on an individual stamp. The watermarks are labeled numbers 190 and 191 by Scott Specialized Catalogue of United States Stamps & Covers (Figure 3).
Watermarks - Find Your Stamp's Value
Watermarked paper has been used for stamps, stamped envelopes, and postal cards. The design of the watermark on U.S. issues generally consists of the letters "USPS". There are two main types of "USPS" watermarks — Double-Line USPS and Single-Line USPS.
Watermarks & Philately – Philatelicly
2024年1月29日 · Watermarks are intentionally created thin spots (designs) embedded into the paper of a postage stamp during its manufacturing process. Usually, they can’t be noticed unless you apply certain measure – either it’s holding the stamp up to the light, or something else.
Finding Watermarks on Stamps - Hobbizine
Watermarks are best viewed from the back of the stamp. The basic method of watermark detection is to place the stamp face down in a specially manufactured black plastic tray, and place a few drops of "watermark fluid" on the stamp.