Creeper ~
I haven't cruised the bottle section lately and just now saw this thread. My initial reaction is that it is simply the result of someone messing around. The Moxie label has a bar code and the Shep's bottle predates that. Bottles like that show up on e-bay from time to time and the sellers try and pass them off to the unsuspecting buyers as something special when they are not. I believe you can still buy Moxie at some stores like Bevmo's. To be honest with you, if it were mine I would remove the Moxie label and just keep the Shep's bottle which is cool all by itself.
SBB