1.88.208

Tube

1933

E. F. Johnson Company Product. Tube. Material: plastic, glass. Size: 1 5/8" diameter x 4 1/2" L. Description: clear glass bulb - black Bakelite base - DeForest Audion No. 427 tube - 5-pin base - engraved script and print in bakelite base: "Deforest Audion 427." Label attached to lower tube envelope: "40 - 7/29/33."

E.F. Johnson Co. Collection. Reference in E.F. Johnson Co. Museum. With socket Acc. # 1.88.207. Waseca business: E.F. Johnson Co.; E.F. Johnson Company; E.F. Johnson Corporate Headquarters; E.F. Johnson Company Corporate Headquarters; E.F. Johnson Co. Corporate Headquarters; E. F. Johnson Co.; E. F. Johnson Company; E. F. Johnson Corporate Headquarters; E. F. Johnson Company Corporate Headquarters; E. F. Johnson Co. Corporate Headquarters.