Nothing too exciting...
This Sansui au/tu 7700 set was cheap,
basically cause it looked like this.
Why you ask?
There was a bottom dollar in one sense,
but quality attracts and scares away customers.
no plastic insert.
This isn't the correct knob,
however it is a Sansui from the same era,
and the price of a good hamburger.
It's not funny how the OCD kicks in
when sitting on the couch!