Had not heard of it prior, but seems legit.
https://www.atomicheritage.org/histo...ct-silverplate
https://en.wikipedia.org/wiki/Silverplate
Wiki references pages 254 and 255 of "
Now it Can be Told: The Story of the Manhattan Project" by Leslie Groves, director of the Manhattan Project, If that gentlemen says so I'm sure we can bank it, at a stretch we could say a Lancaster did drop the bomb, well, at least a Lancaster bomb shackle did. Due to failures of the American releases they were repolaced with British Type G single-point attachments and Type F releases used on the Lancaster B.I Special to carry the 12,000-pound Tallboy bomb.