No worries Pete. The props are RA10274 which i think are unique to the Sturgeon. I do incidentally have two complete props blades – front airscrew but minus their ruberloid coating. They were found in a house in Malta in the seventies by an RAF techie, and having taken a fancy to them had them flown home stowed on a Vulcan. He did also mention a third damaged blade that didn’t make the trip back but I don’t think there was any sign of the contra prop assembly. But you never know!

Rob