Looks like it might have been part of one of their Flying Boats!
Lots of their old goodies to see in the Bing Museum.
Sadly Bing was a victim of the 30s crash and the company was broken up.
BTW: they used to do a lot of contract model
railway work for Bassett-Lowe! 16mm track gauge, which became the HO/OO standard.
The loco in the pic is a 'Real Steamer' 😉
Cheers, Doug 😎