6N9S 6SL7GT USSR 6H9C
6SL7GT General Electric JAN boxes, made for Canadian Marconi
6SL7GT General Electric VT229 Silver Plates (Chrome)
6SL7GT National Union, JAN boxes, IV/52
6SL7GT RCA gray coated, branded ADA Auriema, New York
6SL7GT RCA Coin Base 69 euros matched pair
6SL7GT VT229 Sylvania
6SL7GT Sylvania (VT-229) JAN boxes
ECC35 Philips Miniwatt
 

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