Having seen a Birmingham made boxlock non ejector marked James Purdey that is probably likely. They would supply anything the customer wanted. I know where there is lovely little J. Woodward 28 bore box lock non ejector that was of Birmingham origin. I would think that Father went into Woodwards for his gun and bought Junior something less expensive to practice with. It is very nicely finished. Some Makers such as Thomas Blands made specific 'Keeper's' guns, as did the Midland Gun Company. I have a Bland keeper's hammer gun; well made but very plain. Lagopus.....