2 AM radios 1with knobs. The other with out. Both worked when removed years ago 25 dollars for 1 Or 40 dollars for both In NJ.
I think the one in the photos, with P/N 7313604 was used in 70-72 Skylarks and GS. Not sure if anyone else can confirm? Do you have a P/N on the second one without the knobs?
The 14APB1 service model no decodes as a 1971 Skylark AM pushbutton radio. http://www.buickperformanceclub.com/RadioLabelDecoding.htm