NOS Original St. Petersburg Russia Svetlana SED 6550C Pre Winged C 2000 Week 29

NOS Original St. Petersburg Russia Svetlana SED 6550C Pre Winged C 2000 Week 29

New Old Stock 6550C 2000 29th week - 0029
Same as Winged C but made before Winged C ever existed. Built before the controversy over the Svetlana name. Real Svetlana St. Petersburg!!!
Tested as a New “9” rating on my Orange Vt1000 tube tester when I tested it. Very strong. NOS
Gold grids. Dual 45 degree getters.
I sold a bunch of these a few years ago on Reverb. This is one of the left overs.

These are the best 6550 tube ever produced!