50 years ago was the 50th anniversary of Radio Shack ?

I was looking for the schematic for this:

from an auction site

The KG 207 was a Knight kit telephone amplifier that I built.  All I found here was the speaker and the build instructions, I still have to find the actual amplifier and the schematic.

However I did sorta find it in this 1973 Allied Radio Shack catalog:

The cover says it is their 50th anniversary.

  And of course that was 50 years ago so technically 2023 is their 100th anniversary, but their website really doesn't seem to care:

https://www.radioshack.com/

It's a shame.  Back to the KG 207, it is a 4 transistor, 2 transformer amp, looks to be similar to the Heathkit AM radio amp that I tried out a while back:

https://wb9kzy.blogspot.com/2023/07/try-of-3-transistor-audio-amp-build.html

So no need to pursue it further as far as LM386 killer material, the transformers disqualify it.  

Here is the KG-207 build manual (folder of 8 jpg pages):

https://www.dropbox.com/sh/psdfy1xpxokydwn/AAB1V1hf607emDxdis99fSmaa?dl=0

Best Regards,
Chuck, WB9KZY
http://wb9kzy.com/ham.htm