"The AC Sands $1 pinwheel chips, for example, come in at least three uv variations: no uv, small hat and cane uv and larger hat and cane UV. You list two varieties."

The two AC Sands $1 "pinwheel" chips you mention (SAN-1 & SAN-1a) are not listed as UV varieties ... but as naked-eye color variations that need not be magnified nor placed side by side to attribute as such.