Postage stamp errors can occur during the printing or perforating process. A printing error can result from a missing color or a color that is shifted. Perforation errors can range from imperforate stamps to mis-perforated stamps where the perforations are way off. Check out these unusual affordable stamp errors.
Mongolia 1996 Perforated Mint Issue Missing Black
The black inscriptions are completely missing from this sheet of 18 stamps issued to commemorate the 1996 Atlanta Olympics! Also available is the sheet with complete inscriptions to accompany this spectacular error. Sheet measures 9 3/8" x 7 1/8"