That's Beans. When I first saw it, I was pretty sure it was a Nitro Special. Eventually confirmed that--and he now knows it. I suggested that he contact Walt. He did, so stated on SSM. He's proud of it, and it is indeed a "one of a kind" gun--as is any that's been custom-engraved, had the stock carved, etc. He was looking for provenance and has run into a blank wall. Not at all a surprise.
As long as he's happy with it and isn't trying to sell it . . . As MarkII pointed out earlier, for quite some time Bass Pro was listing Nitros as real Lefevers, and pricing them accordingly. That, IMO, is a different situation.