I did a crop and compare of the top/bottom perfs and they do NOT align for some perforations. Note the 3rd perf from the left, how the stamp bottom perf (the upper cropped stamp) is smaller and shifted to the right compared to the stamp top row perf (the lower cropped stamp). Also notice how some of the perf holes are larger/smaller. It appears that SOME of the perfs have been doctored. Also, as discussed by others, check the perf hole distances from the stamp design frame on the left image - they vary quite a bit.
