Graviner Automatic Fire extinguisher and bracket.

[Shakydoo]

Help!
We are reconstructing an early Hawker Typhoon 1B (Car Door version) for inclusion as an exhibit in the Museum;

(Hawker Typhoon Cockpit/Fuselage)

and are looking for a Graviner automatic fire extinguisher and bracket to complete the fire detection system.
If anyone has a usable example that they are prepared to let us have; please pm me.
It doesn't matter if it's dump dug, or just a tatty ex-aerojumble spare; as long as it's intact.
This is what we are looking for...