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| Start / | Knowledge / | Issue Kinds / |
| Changes | Differences | Parallel Issues |
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Knowledge / Issue Kinds / Others / Differences |
Issue kind difference: common term for two the same postage stamps with no issue kind agreement |
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Sheet or single manufacturing |
Sheet with image edge or booklet without image edge |
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Sheet with four-sided perforation or booklet with three-sided perforation |
Sheet with four-sided perforation or coil with two-sided perforation |
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