Emerson 500 Series Knob

These knobs were used on many radios in the 500 model series. Some used a brown or reddish knob rather than black, but all I have available at this time is black or ivory. Both knbs have a serrated bottom edge.

models: 503, 504, 507, 509, 510, 512 (brown), 515, 516, 518 (reddish/brown), 520 (ivory), 522, 539 (brown), 543, 544 (brown), 581, 595, 599, 642, 652, 700, 702, 539 (black)

Dimensions: 1" diameter, 1/2" tall, 1/4" hole, fits onto a slotted 1/4" shaft.