Yosemite Sam Mud Flaps - $100 (Rochester)

A pair of 1975 Yosemite Sam "Back Off" truck mud flaps are available.
These are large, 12"x18".
These vintage Plasticolor flaps are fiberglass in rubber.
They are weather'd, but do not appear to have been mounted.
There was something spilled on them from a previous owner, did leave blems, but they're how old? (no idea what the substance WAS) Ad will be removed, once sold.
$100