Very good guess duomatic410, that I would have treated myself.
Now that I seem to have most of the Japanese guns on my wishlist, I am diving deeper into Bowkett custom territory.
My airgunning started with a Spitfire, so John has always been a hero of mine. Anyway, I bought an early single stroke pneumatic, which will hopefully arrive in one or two weeks.
I will add better photos once the gun is with me. I like the wych elm stock and I can't wait to try the SSP design.