Even using the simple watermarking method described, it can be difficult to distinguish some watermarks. Watermarks on stamps printed in yellow and orange can be particularly difficult to see. A few mechanical devices are also used by collectors to detect watermarks on stamps such as the Morley-Bright watermark detector and the more expensive Safe Signoscope. Such devices can be very useful for they can be used without the application of watermark fluid and also allow the collector to look at the watermark for a longer period of time to more easily detect the watermark.
Many thanks. this is very useful to know the story behind the name of watermark.
Post 7 Often when you pay with a new-looking twenty dollar bill or higher, you can see the store check the watermark. Sometimes they hold the bills up to the light, and other times they use markers to test the paper consistency. I like when they do that, it makes me feel a little more secure. anon143880
Post 5 thanks. i got the basic idea about water marking. Post your comments Post Anonymously Please enter the code: