This is the Benny's chip in my collection. It is the hub-mold, initial "B". And yes, it is catalogued as being from Benny's Restaurant. (See Ed Hertel's Illegal Guide at: http://www.thechipgallery.com/ebay/pics/bennys.jpg
Your plain mold, "B" chip, with what appears to be the identical letter (but a side-by-side is best), is not documented/recorded. This does not mean that it is or is not from Benny's. If I may copy your scan, I can post it at thechipboard and ask for an atribution. But then, you can to.
As for the other chips, the "B" is obviously different, but then again, that has no real bearing on whether or not the chips is also affiliated to Benny's Restaurant. Also, I find no reference to the chip in the several guides I have.
The Benny Binion connection may be a stretch, but anything is possible. There again, a consult to thechipboard may shed some light. Especially since the mold is the Chain-mold, from Hunt and Co., for which many of the records still exists, and in fact, a Guide has been written that contains the Hunt and Co. records!
Again, you can post, or I can. Just LMK.
Jim (Gaming Ore) Follis