Right, sorted I think!

Rob, it looks like you were right after all.

The reason I said this box is not from a Wellesley is because of this Hobson advert concerning the part their products played in the World Record Long Distance Flight in 1938.

However, I now realise that the box used in the advert is actually the Roc/Skua type, not one from a Wellesley.

I say this because look what I’ve found at the RAF Museum…

http://navigator.rafmuseum.org/results.do?id=69680&db=object&pageSize=1&view=detail