I recently purchased this prop in the UK. Unfortunately the blade broke at the bottom when the aircraft crashed. Inside the prop there are some markings. It is about 8.5 inches wide and 53 inches long.
Hard to tell what it is as it is missing the blade butt. It does appear to be a right hand rotation blade. Possibly a Hamilton Standard or De Havilland because what appears to be a taper bore in the first image, and possibly the remains of a blade bore balance plug.