Zenith Transistors

I came into some Zenith transistors,, if there is a Zenith to common transistor substitution list out there, I can't find it... Does anyone know if one exists??
Putting the Zenith number into the alltransistor site won't do it...
TIA
 
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,,,
 

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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
 
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