Overprint Quality: subjective perception of a overprint qualit
perfect centered overprint
very good centered overprint
good centered overprint
slightly off centre overprint
somewhat off centre overprint
clearly off centre overprint
Overprint Quality Grades: subjective perception of an overprint quality in different grades and conditions
Faultless Overprint: overprint without conditional of manufacturing or wrong handling originated quality defect
Faulty Overprint: common term for an overprint with conditional of manufacturing or wrong handling originated quality defect
Washed-out Overprint: overprint which lost his colour intensity by water