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Overprints A T Ms Additional Stamp
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Knowledge / Accidentals / Machine Postmarks

Accidental Machine Postmark: philatelic term for an accidental machine postmark

Machine Postmark Colour Accidental: deviation from the intended machine postmark colour caused by an accidental

Machine Postmark Typ Accidental: deviation in the machine postmark text caused by an accidental

Light Machine Postmark: clear but too light machine postmark

Strong Machine Postmark: clear but too strong machine postmark

Sated Machine Postmark: unclear machine postmark caused by too much colour on the printing plate

Uneven Machine Postmark: machine postmark with uneven printing colour

Distorted Machine Postmark: deviation from the intended size of a machine postmark

Blurred Machine Postmark: machine postmark with blurred wet printing colour

Machine Postmark Mirrow Image: the wrong way round machine postmark on reverse

Oblique Machine Postmark: cover with machine postmark shifted out of alignment

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