Sure the guy(s) knew what they were looking for!! Long I have wondered how to acquire one, not that I can find a use for it
Try looking at www.railroadiana.org. It’s a railroadiana collector site. That might steer you in the right direction if you’re looking for a diesel horn.
Aside from New Years Day at zero hour I’m not sure where’d you use one either. They sure ain’t street legal! I though about putting one on the Hyundai, but no…