Knowledge / Separation Methods / Perforations / Accidentals

Perforation Accidental: philatelic term for a perforation deviation caused by an accidental

Missing Perforation Hole: perforation with a broken tooth needle and therefore a hole is missing in the perforation line caused by accidental

Perforation Number Acci-dental: philatelic term for a deviation from the intended perforation number caused by accidental

Partly Perforation Number Accidental: philatelic term for a partly deviation from the inten-ded perforation number caused by accidental

Fluctuating Number Of Teeth: postage stamp with uneven distance between the teeth caused by accidental

Fluctuating Perforation Holes: postage stamp with the perfor-ation holes do not stay in line caused by accidental

Perforation Size Accidental: philatelic term for a deviation from the intended perforation size caused by accidental

Shifted Perforation: postage stamp with shifted perforation to another position as intended caused by accidental

Badly Centered Perforation: postage stamp with shifted perforation which is extended over multiple sheet positions caused by accidental

Oblique Perforation: postage stamp with the perforation lines are not aligned parallel to the design print caused by acciden-tal

Rough Perforation: postage stamp with imperfect perforation were provided with paper residue in the perforation holes caused by accidental