Quality double diode triode tubes manufactured in the United States by renowned RCA. These miniature glass 7 pin tubes, designed as detector, AVC rectifier, and audio amplifier for radio equipment, come with black plates, silver internal supports, and round side getters. They are glass etched 6AV6 U.S.A. and printed with RCA logo RCA ELECTRON TUBE MADE IN U.S.A. Boxes are standard RCA red and black printed 6AV6. Photo is typical of available stock.