StI have several sets of Leslie/Nathan 3 chime air horns available for sale from recent demolition projects. I also have a growing collection of 12" Steel bells from both GE and EMD locomotives. All of these components are complete in running-take-out condition. All were legally obtained and this can be verified.

Bells: $250ea
Leslie 3 Chime Horns: $400ea
Air Chime 3 Chime "Made in Canada" horns: $437.50
Nathan 3 Chime Horns: $450ea
Nathan 5 Chime Horns: $625ea

PM me for any further details.