The Locomotive Alerter Button Plunger Switch is a unique and rare collectors item for train enthusiasts. This original piece of railroadiana hardware holds historical significance and serves as a functional reminder of the past. With its distinctive design and purpose, this switch would make a valuable addition to any collection of railroad memorabilia or vintage transportation artifacts. all locomotives have an alerter if not pushed within a certain time the alarm goes off.and then the train goes into emergency. new great for any collection or can be used to put the railroad touch on a project i have not seen one on ebay or any other railroad memorabilia collectors show.
