British Cockpit Clock

[Vix Steel]

Picked up this clock.
I couldn't really nail down which model this was or what exact era.
Looks like a MKIIA ??
WW2 Era?
Which aircraft would this be from?
Test sticker is from post war use?

Cheers!!

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[Luc]

The part number is 6a/579; a quick search suggests it is a WW2 period clock used in Spitfires and various other aircraft.

[MarkMcM]

Very neat clock! Does it run? I recently found a working Type IIIa in a shop: