Harrow perforation - perforation generally used for small souvenir sheets in which the entire sheet is perforated in one operation ...
Figure 5. Harrow perforations result when entire sheets are perforated in a single operation, such as on this World Stamp Expo 89 show sheet issued by Tonga-Niuafo'ou, Scott 122.
Rámkove Zoubkování: (Czech.) harrow perforation.
Ramleh: city in Egypt; see Interpostal Seals, 1865-80.
Ramleh Staz-Bacos: city in Egypt; see Interpostal Seals, 1882.
Ramleh Staz-Bulkey: city in Egypt; see Interpostal Seals, 1880-82.
Harrow perforation - A means of perforating whole sheets at a time.
(2) Harrow perforation-the entire sheet or unit of stamps is perforated in one operation. (3) Line perforation-holes are punched one row at a time. Line perforations are distinguished by the uneven crossing of perforation lines and irregular corners.
Perforation: The punching out of holes between stamps to make separation easy. 1) Comb perforation-three sides of a stamp are perforated at once, with the process repeated in rows. 2) Harrow perforation-the entire sheet or unit of stamps is ...
Comb perforation - the application of perforations to three sides of the stamp in one stroke (T-comb). This can fall into three main groups: single row, multi-row, or the entire pane (Harrow perforation).
 See also: Sheet, Stamp, Perforation, Machin, Cancellation
  
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