Without any markings at all, I would think that it was imported. I believe Lodge and BSR produced a big chunk of the camp Ovens out there that were USA made and they both had at the minimum a size number on them. It should still make a decent user, just not as collectible as a vintage Lodge or BSR. I have two Wenzel camp Ovens and a small unmarked one that are imports that get the job done. I also have five Lodges and one BSR. I also realize there are some really old versions out there that are the most desirable. I personally would love to stumble across a Martin at a bargain price!