Berling Magneto Switch Model SW-1
Here is a hard-to-find, early 1900's Berling Magneto Switch, Model SW-1. Berling Magneto's were used in a number of gas-engine applications during this time period, including aircraft. This example came to us from an estate claiming that it was from a Curtiss JN Jenny Biplane, but we have not been able to verify its application to a JN model.
It is in good cosmetic condition and the switch easily rotates ON-OFF. Approximate 2.75 inches diameter.