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| Start / | Knowledge / |
| Imperforated | Rouletting | Perforations | Die-Cutting | Stamps with two Separation Methods | Paralell Issues | Compound Perforations |
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Knowledge / Separation Methods / Paralell Issues |
Imperforated and Rouletting |
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this stamps were first issued imperforated and than rouletted because of the technical progress |
Imperforated and Perforation |
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some stamps are issued perforated and imperforated to cash up stamp collectors double |
Postmaster perforation: imperforated stamps perforated by a postal clerk |
Privat perforation: imperforated stamps perforated by a private person |
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this stamps were first issued imperforated and than perforated after a perforation engine was available |
by this issue the stamps from the sheets are perforated and from the souvenir sheets imperfoarated |
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original stamp with perforation (left) and |
perforated original stamp (left) and imperforated colour essays |
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Rouletting and Perforation |
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this stamps were first issued rouletted and than perforated because of the technical progress |
this stamps were first issued perforated and than rouletted because of massive problems with the perforation engine |
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by this issue the stamps from the sheets are rouletted (left and middle) and from the souvenir sheets perforated (right) |
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Perforation and Die-cutting |
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some stamps were issued water-activated (perforated) and self-adhesived (die-cutted) |
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