My thoughts too. The original maker's marks have been linished off, but if someone can recognize the examiner's mark on the top of the receiver ring we might still be able to do ID the factory. I can't remember what the examiner's number(s) was/were off the top of my head for Maltby, & am not in a postion to look at my examples till later today, although from the general looks of the receiver it looks most likely it was a Faz or BSA Shirley. In that event it would be possible to distinguish between the two by a quick look at the draws.