Zenith Transistors

Here's a couple,,, help away!!! I would still like to find a substitution list, if one exists?
Not sure if even the unmarked ones use 121- as a prefix,,,
 

Attachments

  • P6300005.JPG
    P6300005.JPG
    222.1 KB · Views: 72
Hey Hugo,,,
Thanks again for the info!!!! This is exactly what I was looking for!!!! I've been trying daily to find a replacement for TR503,,, and hoping some of the Zeniths I found and in my buddys stash may be helpful,, if I can ID them!!!!!
I hope all is well with you,,, thanks again for your help!!!

Regards,
John
 
  • Thank You
Reactions: 1 user