Vintage National Air Variable Capacitor - 1925 Antique Radio Condenser

Description

Vintage National
“Girder Frame”
Air
Variable Capacitor. Quality m
ade in the U.S.A. circa 1925
by National Radio Co., Cambridge, MASS.
Used in early radio, t
his rugged condenser is in excellent condition.  H
as 9 rotors and 8 stators;
all mesh smoothly without touching
,
no bends
.
Measures approximately 3 x 3-1/2 inches.