Well I did some looking tonight and found the original home for your fuel funnel Malcolm, My large parts list for early Massey combines shows the fuel funnel on three models. it will fit the #9, #9a and #9b combines. Gary also had or maybe still has a radiator off one of these combines but he assured me there was nothing left of the rest of the combine. Maybe just a coincidence?
Here is a quick picture of the parts list page showing the two parts you have.