Have you looked at the net posse site? Most stolen horses are listed there.
It may be simply he never did get the papers for the horse and doesn't want to admit that since he sold him as papered. Wouldn't be the first time a horse was sold as registered but really wasn't.
It may be simply he never did get the papers for the horse and doesn't want to admit that since he sold him as papered. Wouldn't be the first time a horse was sold as registered but really wasn't.