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Stamped Envelope Overprints Stamp Impressions Third Overprints Tress Rosettes Watermarks Others

Knowledge / Errors / Print Substrates

Paper Error: philatelic term for a deviation caused by a paper error

Paper Colour Error: deviation from the intended paper colour caused by an error

Mixed Up Papers: postage stamp caused by an error printed on a different paper as intended (e. g. with watermark)

Horizontal Instead of Vertical Laid Paper: postage stamp caused by an error printed on 90 degrees rotated laid paper

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