I recently received several T206's with very vivid coloring, but while the correct size, all obviously not factory cut. I thought they were trimmed, but then noticed the printers mark at the top of this one, also on the other sides but less noticeable - the ones on the right and left are actually quite dark, but don't show well because of the dark green background. I remember years back, seeing some that were horribly hand-cut, with printers marks, and also with back advertising, so I guess this isn't that unusual.
That is tape residue on the back, and those little lines on the right border are from the next back over.