That's what I am leaning towards folks, ceramic filters of some type.

The problem is they cannot be exactly the same type. However there are no circuit symbol numbers or anything.

Didn't they make a law that radios had to have AM and FM ? Or certain ones ? Something like that. I think it was back in the 1970s and intended to get FM radios into cars, but the side effect was that high fidelity FM tuners had to include an AM section.

I caught wind of it in a Hifi magazine a long time ago as the author of an article wrote that it wasn't right to make audiophoiles pay for an AM section in their tuner or receiver that they'll never use.

I also noticed that AM only radios in cars seemed to be non-existent after a certain year.

I'm pretty sure I did not imagine that, but there is prctically nothing on the internet about it after a quick search.