Tung-Sol JAN 6SL7WGT - ribbed gray plates, brown base

This 1960s military spec Sylvania 6SL7WGT tube has a halo or D getter, and a brown base. Click "more info" for current availability.

This rare 1954 Tung-Sol 6SL7GT has round plates and black glass. The white print on the base has the Tung-Sol logo. Tube tests as new with balanced sections and low noise.

This 1960s Tung-Sol 6SL7GT tube has a tall bottle, ribbed gray plates, and a halo getter. The black base has white print with the Tung-Sol logo. Tube tests as new with balanced sections and low noise.