BAKELITE KNOB WITH METAL / PAINTED PLASTIC ? ARROW INDICATOR.
ACROSS ARROW 1 3/8" D AT THE TOP
AND WITH ARROW ABOUT 1 1/4"
KNOB RADIO A
OTHER OLD RADIO KNOBS IN MY EBAY STORE
JUST CLICK ON THE LINK TO MY EBAY STORE AND YOU CAN USE THE SEARCH GRID THERE.