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Accidentals Changes Designs Differences Errors Fakes Kinds Mistakes Parallel Issues Printers Waste Quality

Knowledge / Safety Measures / Watermarks / Quality

Watermark Quality: subjective perception of a watermark quality

perfect centered watermark

very good centered watermark

centered watermark

off centre watermark

off centre watermark

off centre watermark

Watermark Quality Grades: subjective perception of a watermark quality in different grades and conditions

Faultless Watermark: watermark without conditional of manufacturing or wrong handling originated quality defect

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