The original Wright Flyer came to the Science Museum in London when the Smithsonian credited Langley with the first flight.
IIRC, somebody, (possibly Curtiss?), modified (a lot) the Langley Aerodrome so it did eventually fly.
The Smithsonian finally agreed the the Wrights had been the first during WW2 and the Flyer went back. Whichever was the surviving brother ensured the Science Museum had time to build a replica first. I think the replica engine was built by the DH Technical School from the original patterns. Anybody been to South Ken more recently than me and remember for certain?