4 Sylvania 6SN7GTA Tubes,all identical USA chrome dome 1953 manufacture-all code 322-A3B-white boxed-TV7 tested-test nil for shorts

TV7 tested : 50/50 is minimum good

TESTS       : 106/96,100/94,98/94 and 96/96

Always willing to combine shipments-NO FIRST CLASS SHIPPING TO CHINA