New Acquisition - Old School

[Pargolf]

Check this out, found it on CL, I had placed an ad looking for an original radio and an older gentleman called me up who apparently had a auto shop back in the day. I went to visit him and he had a whole storage bay full of stuff. He had about four of these radios, different vintages and both am and fm. This is the only one that fit in my cutout on the dash and it is really clean considering it is over 45 years old. I have seen these on eBay for upwards of $200.00, this one cost me twenty bucks!
I told him I would post this in case anyone wants to get in touch with him.

Does anyone know the wiring for this? There are two pigtails coming out the back, back but I think there should (could) be three? I know where the antennae goes and used to fool with these when I was a kid, but have CRS now. Thanks!