This part is supposed to come of a Rolls royce 22.looks like is powered by a cam type shaft.it has got number on it D11234A.
And several RR inspection marks.looked at engine photos but can not find it any where
The number on the plate was 88443.then re numbered 88943.the two numbers on crank shaft are consectative .83506/83507.are these engine or construction numbers.and are two items related.tiger moth dh82a ?.dh museum and air historical branch are closed.and can they search without a serial...