Lot of 4 Pipe Organ Console Pistons

You are bidding on a lot of four pistons removed from a working pipe organ console, approximately 50 years old. I believe the pistons were made by Kimber Allen based on the other parts in the console. These are double touch Pistons. If you press them a small amount, they make continuity with one set of contacts, and if you press them all the way, a second set of contacts is closed. And this way, you could change manual combinations without changing pedal combinations. These pistons may also be used as normal pistons. The buttons are slightly yellowed from age. Free shipping in the Continental United States.