In Knirims book there is a pic of one in a Sunderland wardroom otherwise I would say only the others..

I have a pile of different keys and it has been running nicely now for a few hours…

Only thing is I think the dial has been partly repainted. Case is pristine.

Unknown I am afraid – purchased at auction house along with a propeller boss clock that I assume is from an FE2B as it is marked as made by British and Colonial (B&C 6630) and four blade with opposite twist on blades to normal.

BG52A thank you

The 9Z and also the 7Z appear to be candidates according to a nice chap on aerodrome.

Cees I am no expert on digging or alloys.

It was clearly stamped on the back that it was made from Lynite.

Which according to the internet is principally an Al alloy (with possibly a small amount of Mg).

I repeat – I was only asking if someone had seen it before and not dictating the physics of crashing or corrosion.

perhaps as it is American and made from aluminum and not aluminium – it may survive better – IUPAC joke.

Hawker yes I saw that one – same wheel etc..

Thanks Tony.

I trust in your knowledge of aircraft wheels

The rear of the wheel (shown in pictures below) was very badly pitted and there were a couple of places where it had gone right through and the usual blue powder residues. There were also multiple cracks in the same area. I had assumed that the lower edge of the wheel had impacted and lain in damp ground for several years.