I spotted this video on You Tube.
Seen here is an H.O Scale model of a Bachman Spectrum Series Pennsylvania Railroad
K 4 Class 4-6-2 Pacific type steam locomotive pulling a vintage PRR 1920's era passenger
I believe that the Pennsylvania Railroad actually used non swinging solonoid operated bells
on their steam locomotives. I believe that this particular steam whistle, was one that the
PRR used on freight service steam locomotives. They were sometimes interchanged during