Both Scott 1882a and 1882b are assigned having perfs.of 11.7 all around.Take a look at why bottom of the Scott 1882b is 11.7 and the top is 11.6
It would be explained after soaking that both top and bottom MAY shrink. But will not explain 11.7 vs 11.6
Another reason could be [and I say could be] that if][and a big if], that one 11.7 wheel broke and they to finish the print perforation run, they could have replaced the wheel with as close to 11.7 as possible....A lot of maybes
Robert


