Should I grade this Polar Bear Matty

[Northviewcats]

I picked this card up the other day and I will probably want to trade or sell it because I already own a nice, dark-cap Matty. The question is should I have it graded first? There is a light stain in the right border; probably its a tobacco stain, but the back seems very clean for a Polar Bear, so it may have had something spilled on it in the past. I'm guessing it might get a VG-EX, but the stain concerns me. As far as evidence of trimming, the card measures fine and I don't see any evidence of tampering. I would appreciate any advice on what you think it might grade.

Note: Most of my T-206 collection was purchased already graded. I've never sent in a card for grading, but I do have about 80 ungraded T-206 cards, that are in similar examples to this one (nice crease-free cards, most without any staining), so I'm thinking about opening up an account with SGC and start sending them in 10 at a time. Eventually, I would like my collection to all be in the same holders.

Thanks for your help,

Joe