Looking for some help with some tube identifications. I have some basic info but I'm not sure how accurate it may be. Any help would be greatly appreciated.
First up a pair of Sylvania 5751 tubes. Label reads a code of EBD C10 (?) Triple Mica, black plate, square Getter?
Second set I believe is Telefunken ECC83 Grey Ribbed Plates. Date code of 2C (02/1961 ?)
Third set are RCA JRC-5814A, code 65-30 (?)
Fourth set I believe are Cifte 12AU7s. Code says 7135 AUA
The last set I believe are Amperex Holland, labeled Electorhone. Code is AY A6 PH. Note the lack of getter flash on 3rd tube.