Two New 1950's-1960's Polished Aluminum Koropp Ballentyne Drive-In Movie Speaker Knobs
This listing is for (2) reproduction Koropp Ballantyne knobs.
These knobs are designed to be used with knurled or D-shaft Drive-In volume controls.
Art Deco Dimensions:
1/4" volume control shaft hole.
Historically correct for various styles and shapes of Drive-In speakers.