Somebody knows... Maybe you?
The part will be available maybe through Henry Powell or someone here on the forum. I used to have tons of Jubilee parts but sold them on a couple of years back. I presume these twin jackpots were removed from machines en masse when the machines went from clubs into seaside and other non jp outlets many years ago. All those original screen printed jackpot glasses thrown in skips too.
I contacted Henry Powell about some other bits I need (not knowing I also needed this bit) last week, but haven't heard back yet. Treefrog, maybe if some of them aren't complete, and they have any of the parts I need, would you be willing to sell the bits I need? Or if not maybe a complete one?