I would love to see the provenance from Kieth. I had lunch with him at his home in Salmon the day after he received a case of books, Safari. We talked Doubles in particular as he was proud of the book (got a signed and dedicated copy as a gift from him) Do not remember any mention of a 470 as I had a Gibbs 470 with me and we took it out of town to give it a go. I think I would remember his mentioning having a 470.

Also, not a WR historian but when did they close the Conduit Street shop? Just wondering if this is a re barrel with a bit of 'extra' lettering on it? It happens in Belgium all the time.