Originally Posted by
India Four Two
I didn't realize that any Mark IXs had the small rudder.
Early Mark IXs did.
Having said that, BR601 did have the later wide-chord, pointy rudder when in South Africa:
However both the video and photo show it with the earlier elevators, suggesting that it would have been built with the small rudder too, and the larger one retrofitted at one point, but subsequently removed.