Hi everybody,
I would say Strathearn P7, myself. The weight is not neat enough to be either early Perthshire or John Deacons (the canes do not look John Deacons to me but in truth I am seen few of his early attempts - also there is no signature which is unusual for JD but not impossible).
However, now that I think of it, I have never seen a P7 with a translucent ground (blue or any other translucent colour), Hum...
I am sure someone out there will know for sure....
SophieB