(7) National Union 27 Triode Tubes Audio Radio Hi Fi Hot-Stamped!Coke Bottle!

Description

Offered are (7) National Union type 27 Coke-Bottle Audio Triode Tubes.  The tubes are clean and in good condition. Each tests good on the EICO dynamic tester and they show no shorts or inter-element leakage. (4) of these tubes have black plates and (3) have silver mesh plates. Each has a side getter with all good silver flashing. These tubes have hot-stamped base graphics.  Production codes on the bases are as follows: V, J, R, H, V, V and H.  All bases are firmly attached. Clean pins with minimal tarnish. Used in RF and Audio circuitry.  Pick up the early audio tubes for your own amp or for a DIY audio project. Mouse over images to enlarge.  NO RESERVE!! Thanks for looking.