Second watermark

This stamp comes from Plate 4, Electro VII, Position 4.
There is a small triangular mark juft above and to the left of the crown's cross. This is a compartment mark which is always present with its ditinctive triangular shape but can vary in size.
A second feature is only vetigially present in this specimen: a thinning of the bottom margin for about 1mm under "N" of "ONE".