VINTAGE SMITHS AIRCRAFT REV COUNTER TACHOMETER 6A/450 WW2 RAF SPITFIRE HURRICANE

I believe it is from an RAF Spitfire or Hurricane. It is model number 6A/450. The face is stamped MK IXD 12496/40. It is in used condition. Appears to work as it should when the drive is rotated but other than that it is untested.

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