Overprints are used for many purposes. They can be a precancel. They can change the value of a stamp if there is a shortage or rate change. They can be used to celebrate a special event. They are also used to validate the use of stamps from Another Country in the local country. The study of overprints adds a new dimension and understanding of history and time to philately.
stamp collecting
Litho in stamp collecting refers to the printing process called offset lithography.
Do you mean as a picture to show the overprint? The best way is a combination of using a scanner and some photo editing software. The one thing that helps is that overprints are usually a single, solid color, which allows you to 'erase' all of the other colors, leaving the overprint.
Kenneth F. Chapman has written: 'Good stamp collecting' -- subject(s): Collectors and collecting, Stamp collecting
Margaret I. Morris has written: 'Thematic stamp collecting' -- subject(s): Stamp collecting
Walter Young has written: 'Stamp collecting, A to Z' -- subject(s): Stamp collecting
Stamp collecting
because stamp were easily obtained .
Edward H. Spire has written: 'Adventures in stamp collecting' -- subject(s): Stamp collecting
James Watson has written: 'The Stanley Gibbons book of stamps and stamp collecting' -- subject(s): Postage stamps, Stamp collecting 'The Stanley Gibbons book of stampsand stamp collecting' -- subject(s): Collectors and collecting, Postage-stamps 'Your book of stamps' -- subject(s): Stamp collecting 'Modern 8mm cine-photography' -- subject(s): Amateurs' manuals, Cinematography
Mainly Stamp Collecting
David Lidman has written: 'The world of stamps and stamp collecting' -- subject(s): Postage stamps, Stamp collecting