You may never sell a slabbed chip. But why don't you just call them "RARE DOOR STOPS" like the one in your scan. You could make a small fortune selling them to anti-slab chippers. Just go don't the "LIST"

Personally, I scrubbed all my chips with a stiff brush and Boraxo and Laminated them to keep them nice and clean, and free of fingerprints!! I'm thinking of opening a business of laminating chips, door keys, and slot cards. BUT NO VALUE GRADING WILL BE AVAILABLE, so don't ask when placing orders. I'll let everyone know then I go into production.....