The tag says "whole trimmed brisket". It's still in the cryovac, but it does appear to have some deckle on it. I was surprised a little by the small size. When I buy them I'll be "going big" and looking for choice, but they are pretty scarce around here right now.
I'll post up how it turns out. Thanks to all for the tips and keep them coming, I'm not cooking until Sunday.