I have problems with the monitor I'm using - the red gun control is dodgy. I need to clarify a couple of things. I see the headstock as squared off, like a Martin. The f-holes on a Martin have characteristic squared ends, so it's not a Martin. Anyone who'd like to help with the head shape, please describe it to me.
I've got to disagree with Songster Bob - I've seen Kalamazoo archtops with single point headstocks, very like a Kay headstock. On the other hand, the guitar is very like two Kalamazoos that I've seen, except that these were both small (around 14") and this one looks bigger. The problem I have is that in GB cheap US guitars are rare, so I've only got thirty years of looking at photographs for reference, and a few odd guitars left behind by the GIs.