Watermark Error: philatelic term for a deviation caused by a paper with watermark
Mixed Up Watermarks: postage stamp caused by an error printed on a different paper with watermark as intended
Watermark Typ Error: deviation in the watermark text caused by an error
Watermark Plate With Error: watermark made from a caused by an error damaged watermark form
Missing Watermark: postage stamp caused by an error without watermark
Partly Missing Watermark: postage stamp caused by an error printed on paper with partly missing watermark
With Watermark: postage stamp caused by an error printed on paper with watermark
Vertical Instead of Horizontal Watermark: postage stamp caused by an error printed on paper with 90 degrees rotated watermark
Horizontal Instead of Vertical Watermark: postage stamp caused by an error printed on paper with 90 degrees rotated watermark
Inverted Watermark: postage stamp caused by an error printed on paper with 180 degrees rotated watermark
The Wrong Way Round Watermark: postage stamp caused by an error printed on paper with watermark the wrong way round
Distorted Watermark: postage stamp caused by an error printed on paper with distorted watermark