Okay, so I'm talking to myself here, but what the heck.
Spoke to the owner last night and I think I've solved the mystery. That, and I found a post in the non-USA drums forum.
The owner described the drums as BOP (ala Ringo) with a Ludwig insignia on the front kick head. The tom arm is octagonal in shape (ala import) and the shells have badges stating "Continental" and nothing more.
So it appears that he has a Continental kit (MIJ). He believed that Ringo played a "Ludwig Continental" kit in the 1960's and of course the bass drum did say "Ludwig" (on the head), hence the confusion.
I still plan on checking them out as the price is quite low and with this new info, I may be able to get them at an even lower price. I always have students looking for inexpensive practice kits.
So there you go - Wayne, feel free to move this to the non-usa forum if you see fit. Thanks - BD