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| Accidentals | Changes | Differences | Errors | Fakes | Kinds | Mistakes | Parallel Issues | Printers Waste | Quality |
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Knowledge / Safety Measures / Silk Threads / Accidentals |
Silk Thread Accidental: philatelic term for a paper with silk thread deviation caused by an accidental |
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Missing Silk Thread: postage stamp with caused by accidental shifted design print which reach a sheet position without silk thread |
Silk Thread Colour Acciden- |
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Shifted Silk Thread: postage stamp with caused by accidental shifted silk thread to another position as intended |
Oblique Silk Thread: postage stamp with caused by accidental silk thread shifted out of alignment |
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