Ok, got some info and searched Google. Turns out the long one is a 57 Olds radio. It is an AC delco model number 989001.
One of the radios that looked like a 64 has a tag: 76PTN-1380. I couldn't find anything on that but was able to use the part number from the face plate to determine that (2) of these are 64 radios. The '58 radio's still need to be confirmed, no tags or ID numbers on those.
Guess nothing left to do but see if they work and get them ready for another ebay sale.