Yes, that looks like quite an instrument. But questions remain. That lengthy description is an odd cut-and-paste job which doesn't explain how the bass got from Alphonso to this Las Vegas (technically Henderson) "antiques" dealer. Pawn shop? Something slightly fishy. I don't have Alphonso's contact info but I know some folks who do so I might try to reach out and see if there's another angle to this story...
Jimmy J