E. F. Johnson Company Product. Viking Courier Amateur Transmitter. Material: metal, plastic, glass. Size: 15 1/2" W. x 9 1/2" H. x 11 1/2" Deep. Description: gray metal case; speaker at top, bottom and sides; black plastic dials on front; gauges behind glass covering; electrical cord at back; four feet at bottom. Glass covered gauge at top left numbered 100, 200, 300, 400 and 0, 50, 100, 150, 200; E.F. Johnson Company logo in middle. Black dial middle left labeled: "Meter, Grid, B Plate, Grid, C Plate"; indicator light labeled "Plate." Two silver metal switches at bottom left labeled: "On, Plate" and "On, Fil." Glass covered gauge in center labeled: "0, 10, 20, 30, 40, 50, 60, 70, 80, 90, 100." Large black dial with silver switch below, labeled: "Band." Three dials along right side: "Coupling" and "Grid Tuning." Black print on case: "Johnson Viking Courier"; E. F. Johnson Company logo below.