Top Hat Seam Survey

On certain banded top hats, there is a big ugly line visible off to the left side (see https://i.imgur.com/IR7kxqk.png). Here's a list of which ones do and don't have these 'seams'

Has the seam (11):
Black Banded Orange Top Hat
Brighteyes' Top Hat
Blue Top Hat with White Band
Green Banded Top Hat
Green Top Hat with White Band
Orange Banded Top Hat
Purple Banded Top Hat
Red Banded Top Hat
Troll Top Hat
Tiny Top Hat
Yellow Banded Top Hat

Has the seam, but it's not too intrusive (3):
BIG: Purple Banded Top Hat
JJ5x5's White Top Hat
Ticket Banded Top Hat

Does not have the seam (8):
Blue Banded Top Hat
Blue Top Hat
Neon Pink Banded Top Hat
Neon Pink Top Hat
Thoroughly-Tested Hat of QA
Video Creator Top Hat
W's Top Hat
White Banded Red Top Hat

64% of banded top hats have the seam.
Blue Banded Top Hat is the only seamless black-base top hat.