Square of dots on the sheet of the 1p1E4-SO

This variety is found on the first stamp of the five by two repeatable grid used to populate the plate, yet interestingly, the variety only happens on the left half of the sheet with the exception of one case where I find it on the right side.

Row 1 Position 1











Row 3 Position 21











Row 5 Position 41











Row 7, right side, Position 66











Row 9 Position 81