Valvulas Eletronicas; Radio Antigo, Amplificador E Peças

   VALVULAS NOVAS SEM AS CAIXAS;                               VALVULAS NOVAS EM CAIXAS ORIGINAIS;

   6S7 G - RCA E RAYTHEON MADE IN U.S.A.                      EF 55 - HALTRON, England.

   6D6 = 78 - HALTRON, England.                                          6SQ7 - INTERNATIONAL C, U.S.A.

   6C8 G - RCA RADIOTRON, U.S.A.                                     6SS7 - RCA, U.S.A.

   5Y3 GT - ULTRON, Munique, Alemanha Oriental                  6Q7 - Russia anos 60. em caixa branca

   6N7 GT - RAYTRONIC, Russia anos 60                               6J7 - ULTRON, Munique, Alemanha Oriental.

   6SL7 - Russia anos 60                                                       6C5 - RCA  RADIOTRON, U.S.A.

   6J5 GT -  Russia anos 60                                                   6SK7 - RAYTRONIC, Russia anos 60

   6X5 GT - Russia                                                                EL 90 ou 6AQ5 - RCA, Made in U.S.A.

   25Z6 - RCA Made in U.S.A.

   6B7 e 6B7 G - U.S.A.

   6B8 - G.E., U.S.A.

   6K8 - INTERNATIONAL C, U.S.A.