6SL7GT RCA (USA), smoke glass, black plate, black base, silver marking. Price per pair (= 2 pcs). Tested good by live test, measurement on equipment, and tube tester: no noise, no rain, no gassy. Internally match pair, same construction, matched pair, very strong.

• Tube 1, internally match pair: 1875/1.6
• Tube 2, internally match pair: 1.8/1.8