Rugged Mil. Spec. triode tubes manufactured for the Armed Forces in the United States by renowned Hytron. These shoulder type glass 8 pin octal based tubes come with black plates, bottom getters, and brown bases. They are glass etched 1626 and printed on base in black JAN-CHY-1626 VT-137 MADE IN U.S.A. HYTRON. Boxes are standard military beige printed JAN-CHY-1616 TUBE VT-137 U.S. ARMY U.S. NAVY under contract no. 32328-PHILA.-43, delivered in October 1943.
Rugged Mil. Spec. triode tubes manufactured for the Armed Forces in the United States by renowned Hytron. These shoulder type glass 8 pin octal based tubes come with black plates, bottom getters, and brown bases. They are glass etched 1626 and printed on base in black JAN-CHY-1626 VT-137 MADE IN U.S.A. HYTRON. Boxes are standard military beige printed JAN-CHY-1616 TUBE VT-137 U.S. ARMY U.S. NAVY under contract no. 32328-PHILA.-43, delivered in October 1943.