JAN-CHS-6SL7GT VT-229 SYLVANIA röhre TUBE MIL SPECS BLACK PLATE WW2 PRE AMP 6SL7

2 TUBES VT-229 KEN RADJAN-CHS-6SL7GT VT-229 SYLVANIA MADE IN USA 

BLACK FAT ROUND PLATE OLD PRODUCTION 

TV7 TEST 54/54   ; 44/52 ; (REFERENCE GOOD 32/32) 

BOTH TUBES WITH PAN GETTER , 

BLACK BASE , OLD PRODUCTION TUBES MILITARY SUPPLY 

HIGH QUALITY GRADE VINTAGE VACUUM TUBES TWIN TRIODES 

BOX 127