Monty, you're never going to get the answer you want. Time has obliterated the trail. But the basic question is "where was it made" and the answer is unequivocally England, if that's what is concerning you. Who knows, the barrels may have been stitched together by the same guy who the day before finished a pair for a name London maker. The action forging was undoubtably milled by one of the major shops and an actioner working in a small walkup shop on St. Marys Row filed it up as he did with so many others. You know, I have several basic Birmy boxlocks that are actioned as well as any London gun I've ever handled. If you want to find out more about how the trade operated I suggest going to Amazon and searching "The Birmingham Gun Trade" by David Williams. Get a used copy. While it is intended to trace the development of interchangeable gun parts it of necessity had to reach back to the work of the individual craftsmen. Wonderful read and contains a number of previously unpublished photos of the shops. Producing it was a project of the City of Birmingham.