Acquired these bulbs a while ago and I am curious what vintage they are. The base has "This Side Up" w/ arrow and opposite TUNG-SOL 6-8 volt and MADE IN USA. Has a red ford script on frosted glass. I am thinking magneto but not sure what years. Made in USA, they must be old!
Not magneto if they are 6-8volt.
1919 or later.
Would like to know more about these!
I bet they were made for those 1919? cars with the clear lenses.