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Overprints A T Ms Additional Stamp
Impressions
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Substrates
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lations
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cences
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cellations
Stamped Envelope
Overprints
Burelages Form Prints Watermarks Stamp
Impressions
Perforations Se-tenants Second Overprints Others

Knowledge / Accidentals / Pencancellations

Accidental Pencancellation: philatelic term for an accidental pencancellation

Pencancellation With Colour Accidental: deviation from the intended pencancellation colour caused by an accidental

Light Pencancellation: clear but too light pencancellation

Strong Pencancellation: clear but too strong pencancellation

Diagonal Pencancellation: postage stamp with 45 degrees rotated horizontal pencancellation

Vertical Pencancellation: postage stamp with 90 degrees rotated horizontal pencancellation

Inverted Pencancellation: postage stamp with 180 degrees rotated horizontal pencancellation

Double Pencancellation: postage stamp with twice pencancellation

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