Coronado is a shortscale (30") bass, but since it's a hollowbody, it's about as long as a standard P-bass is (because the bridge is located in the center of the body). That bass is in fairly bad shape, and parts for it are hard to find (I'm talking about the DeArmond/Rowe pickups and the bridge). The "II" stands for the 2-pickup version (there was also a "I", with just a neck pickup, but they're not that common).
Nice basses, very un-Fender-ish in terms of feel & sound. And light! Did I already tell you they're light?!? Bit thuddy/boxy sound, without much sustain: http://www.youtube.com/watch?v=x_lxjMXT5yI