 |
 |
 |
|
 |
|
 |
| Start / | Knowledge / |
| Accidentals | Changes | Differences | Errors | Fakes | Kinds | Mistakes | Parallel Issues | Printers Waste | Quality |
 |
Knowledge / Luminescence / Accidentals |
Luminescence Accidental: philatelic term for a luminescence deviation caused by accidental |
|
  |
  |
Shifted Fluorescence: postage stamp with shifted fluorescence to another position as intended caused by accidental |
Shifted Phosphorescence: postage stamp with shifted phosphorescence to another position as intended caused by accidental |
 |
 |
Shifted Fluorescence Additional Printing: postal stationery with shifted fluorescence additional printing to another position as intended caused by accidental |
|
 |
 |