Since you didn't file off the cable guides, etc, you might check in with the Classic and Vintage crowd. They will prolly tell you to go to the Waterford site, where they have a history of the Paramount line, including a handy key to deciphering the serial number on the bottom bracket. From the era your frame is from, they were building some Paramount frames in the Waterford factory--awesome, US made--and then there was another series of bikes, called "Series" frames, which were built to Schwinn Paramount spec in Japan. Of course nowadays, people covet steel frames from Japan, so there's even some cache there. In either case, they were top quality frames, so you got a real winner of a frame there.