Thanks PPG and Don!
And thank you again Don for StampSmarter.
I actually posted this because of this statement under "Watermark Orientations":
The lower denomination stamps, which include most of the coil stamps, were printed using the horizontal, that is "non-rotated" watermarks illustrated below. Booklet stamps, and some higher denomination stamps, were printed on smaller sheets with the watermarks sideways ( the "rotated" stamps below). Thus a one or two cent coil with a sideways (vertical) watermark has a high likelihood of being a fake made from a booklet stamp.
I suppose an 8c could be considered a "higher denomination", meaning it comes from smaller sheets?