Hi, I had look on inter net wikipedia etc and found it very interesting. It seems that the gunsmiths could copy any gun to order, and I imagine a air rifle would be easer to export / import rather than a live round gun , even in 1930's ? So I guess [assuming it is a Khyber] It could have been made for a tourist or a Pakistani who wanted rid of pest's , with out the noise of a live round gun? atb Al.