Imperforate: Refers to stamps without perforations or rouletting between the individual stamps in a pane. The earliest stamps were imperforate by design, but after about 1860 most stamps were perforated.
Imperforate:
Stamps withour perforations. They must be separated with scissors and are usually collected in pairs to prove their authenticity.
Inverted Center: ...
Imperforate error: Perforations are missing on one or several sides.
[edit] References
L. N. Williams, Fundamentals of Philately, chapter 7 ...
IMPERFORATE STAMP: A stamp having no perforations. Individual stamps must be cut apart from the sheet.
MINIATURE SHEET: Sheet of 25 stamps or less, not issued for a specific commemorative purpose.
MINT: In unused, original condition.
Imperforate. Stamps without perforations or separation device between then on a sheet.
Imperforate - An absence of perforations or rouletting between a pane's individual stamps.
Imprimatur - The first sheets of stamps produced from an approved plate.
Imperforate
Refers to any postage or revenue stamp that occurs with no perforations. These are most commonly found in the first-issue series of revenues.
*Imperforate - stamps without perforations. The earliest stamps were issued in imperforate form. Imperforate stamps that were intended to be perforated are errors.
"Imperforate" means a stamp was issued without perforations, a practice that was common in the earliest days of stamps, and again for a period in the US at the start of the 20th century, ...
Imperforate - the lack of some separation device between stamps such as perforation holes or rouletted slits that allow for easy tearing. Imperforate stamps have to be cut apart by scissors or blades.
imperforate - Before perforations were invented, stamps came in sheets with no holes in them. You had to cut the stamps out with scissors. Stamps like that are called imperforate.
Imperforate stamps that have the same design as stamps that were also issued with perforations or rouletting should also be collected as pairs.
Imperforate Stamp
Stamp bearing straight edges on all four sides.
Invert ...
Early imperforate stamps must be checked carefully to be sure they are not a later perforated variety with the perfs cut off. This "technique" is used to fool a collector into thinking he has the more valuable imperforate variety.
5: B-blank; error appearing on GB imperforate penny-red stamps of 1841-54 in which the lower right check letter box received no letter (B-A, plate 77 of die I). 6: with eagle and United States of America: South Carolina Custom House revenue seal.
- Abbreviation for imperforate (imperf. is more common).
Imperforate - Never perforated; early stamp sheets were issued in imperf condition, but with modern issues an imperf copy is usually a prized rarity.
Imperforate errors are known on a number of U.S. stamps and typically range in value from about $10 to $1,000.
Near-Perfect Centering (large margins on imperforate stamps) Very Fine: Above Average Condition for year issued. Well centered (full margins on imperfs) Fine: Average appearance for that particular stamp and year issued.
Farley supplied a few imperforate sheets of current commemorative issues to Pres. Franklin D. Roosevelt and other government officials. The resulting uproar from U.S.
Printing errors include imperforate (stamps printed in sheets without perforation or other means of separation) or part-perforate varieties, missing or incorrect colours and inversion or doubling of part of the design or overprint.
The earliest adhesive stamps were issued imperforate and had to be torn apart or cut with scissors, although the printers, Perkins Bacon, actually had a small perforating machine in 1840 to perforate cheque book counterfoils.
Coil stamps are kept imperforate at top and bottom, or at the two sides, with perforations on the two other sides, as the case may be. This makes for smooth operation in removing the stamps in strips from the vending machine.
3. Perforation Amongst perforation fakes to be found are imperforate stamps perforated, perforations removed and wide imperforate margins added, gauge of perforations altered, etc.
3392c booklet pane of one imperforate stamp
3191
33¢ Celebrate the Century - 1990s (pane of 15) ...
A brief review of perforation methods in use will help us understand the nature of these imperforate at the bottom varieties. ... Don Black's 'downloadable perforation gauge' - a good place to start.
*Privately perforated coil stamps of 1902-22 do exist precanceled with flat electroplates. In these cases, imperforate sheets of stamps were first precanceled and then made into coils by cutting and splicing.
Blind Perforation: Perforations that have been only lightly impressed by the perforating pins, leaving the paper intact, but cut or with a faint impression. Some stamps that appear to be imperforate really are not if they have blind perfs.
There were no perforations between stamps as seen today. That is the stamp was imperforate.
Included are discussions on Proofs, Printing Periods, Plates, Colour, Perforations, Paper, Gum, Imprints, Imperforates, Varieties, Postal History and more. Here is a good introduction by one of the leading authorities on the issue.
Technically printed by Owen King Pty Ltd, McPherson's is the parent company, and has requested to be recorded as the stamp printer. It is also believed they printed the imperforate ANZAC miniature sheets in 2008 under the name Bang Stationery and ...
 See also: Stamp, Used, Catalog, Cover, Perforation
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