Wrathall Mark wrote:

X 24 cylinder, late thirty's, not British, some sort of overhead rotating
drum  intake valving? . The only X-24's I can think of are the RR Vulture
(Poppet valves) and EXE (Aircooled sleeve valves). The photo was not shot by
Paul at the Pratt museum :)

Mark Wrathall

Mark
Right number of cylinders, and yes it is not British, and the photo is
not one of Paul' P&W series - getting warmer - Vance

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