Doubt that this could get slabbed. Pulps are a no-go, and while this is past the pulp era and technically more a magazine, there is an approved list of magazines on CGC's site, and as you might expect, this isn't one of them.
You'd have to petition to have this added to the list. They're not into one offs, and I don't think there are a lot of other requests for 3 Book Western coming in.
Great shape, kat! Eat it raw!
Maybe the competition might graded?
no magazines at the moment
Copy, will stay raw.