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| Start / | Knowledge / | Separation Methods / |
| Accidentals | Differences | Errors | Fakes | Mistakes | Parallel Issues | Printers Waste | Quality |
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Knowledge / Separation Methods / Cuts / Differences |
Cut difference: common term for two the same postage stamps with no cut agreement |
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Cut position difference: common term for two the same postage stamps with no cut position agreement |
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