Knowledge / Separation Methods / Perforations / Accidentals

Perforation accidental: philatelic term for a perforation deviation caused by 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