As
@gurgalunas said, it is B519. They had numerous bottles, every single one of them was 122 proof. I remembered seeing a couple 135 proof in the thread, so I was looking for something higher if they had it, but wasn't going to pass it up since I was in the store.
I had actually sampled the Four Roses the night before, at a restaurant. While I knew that barrels will vary, I opened this one tonight and was pleased, tasted just like the pours in the restaurant. There were 3 bottles on the shelf, two different barrels.
Yes, they had plenty of it at our local big chain, and this is one of their smaller stores...so I wonder if the big one near me has a different batch? I guess I have a trip to make.