matched quad of nos mesa boogie STR415 6L6GC valves. Fully tested readings can be seen in the pictures. These are nos USA made, they are 415 not 420 as stated on the box.
Mesa Boogie 6L6 GC STR 420 Power Tubes Valve, Opned it never used
✮ MESA BOOGIE 6L6 STR-440 Premium Grade Guitar Amplifier Vacuum Tube*Valve ✮
Amazing Rare 1970s 'Doobie GB-40' Guitar Amp - Made in Japan (Mesa Boogie)
Marshall Guitar Amp FULL SIZE Stack PVC BANNER also Vox, Orange, Mesa Boogie etc
Mesa Boogie Celestion Black Shadow MC-90 Guitar Speaker 8 Ohms, 90W, 12"
Mesa Boogie Mark Series Head Shell Black Taurus MKII, MKIII, MKIV
