A fellow collector in my state says he's been getting the grader note "canvassing" from CGC on a number of his books. There is no such term in the Glossary on the CGC site.
I suspect "canvassing" may be a new way to refer to pressed comics whose covers are not smooth. Anyone know for sure what "canvassing" means?
CGC has responded, and "canvassing" is indeed a pressing issue: "Canvassing refers to a pattern that has been pressed into the cover during pressing, likely from whatever surface was used against it. It looks like a cross stitched pattern."
My friend reports that he's been using teflon sheets (which often have a light weave texture) when pressing books and is going back to silicone paper.