[MVSNYC]

I think I heard that SGC isn't slabbing Blank Backs or any scraps anymore. Which, if true, is a real shame. The labels they created for such cards helped fuel a popular sector of the hobby (scrap/error collecting).

Here's my Mitchell blank back (Proof). Sounds like you may be interested in selling your Mitchell...if so, I wouldn't mind acquiring your it as a nice companion to mine. I'll send you a DM.