Missing Rouletting: postage stamp caused by an error without rouletting at all sides |
Partly Missing Rouletting: postage stamp caused by an error with missing rouletting at one or more, but not at all four, sides |
Pair With Missing Rouletting in Between: pair caused by an error with missing rouletting in between caused |
Double Rouletting: postage stamp caused by an error with twice rouletted at all sides |
Partly Double Rouletting: postage stamp caused by an error with twice rouletted at one or more, but not at all four, sides |
Rouletting Size Error: postage stamp caused by an error with a different number of rouletting elements |