2 x 5C3S SVETLANA 5U4G PAR EMPAREJADO 1971y Audiophile Tubes NUEVO Ir=260mA

5C3S / 5Ц3С / 5U4G. Made 1971y OTK - 1. by =C= Svetlana Factory for the Soviet Military Needs. ELECTRICALLY Matched PAIR.

eBay