Lot of 2 pcs NEW 6N13S Svetlana tubes. MATCHED PAIR - tubes has identical electrical characteristics. We test our tubes on High-End Soviet Tube Tester L3-3. 2 tubes in 1 lot. 100% garanty working.

Lot of 4 pcs NEW 6N13S Svetlana tubes. We test our tubes on High-End Soviet Tube Tester L3-3. 4 tubes in 1 lot.