There's another discussion thread on these same horns right now. Technically, it would've been the 2nd Bundy. The first were New Wonder stencils that came out of the Conn factory when George Bundy was still working for them. He later went over to Buescher. The Elkhart 30A is the nearest model to this horn, though the Selmer (USA) Signet and Padless models were pretty much the same horn. It's debated as to whether or not these were based on Aristocrats, though there are at least some similarities. Wayne Shorter used one of these throughout the early to mid 60's. I had one of these for a time, and it was the first tenor I owned. They're extremely undervalued, though the silver plate probably adds a few bucks. This doesn't stop them from being great playing horns.I think it's actually an Elkhart 30A. If I recall correctly the first Bundies were based on this horn, which is derived from the Aristocrat series 1. You can find some topics on this if you search the forum.
I play one like this myself (albeit with different engraving) and it plays and sounds really well.