http://www.palmercollector.com/PBLine.html this shows the PB line of Palmers which is where your cue comes from. I have an old PB7 I bought new in the early 80's and I think I paid about $250 for it. The PB's sold from $100 to $400 for the top line model per the data in the link. I always liked the floating points. I always liked the way my PB7 played.
Good luck