Sp-47
That is a SP-47 circa 1990's.
I have the *SP-49 (3 above it). I paid about $600 three years ago with 2 shafts. IMO, with the slumping cue market, I'd say it's worth $500-$650. The condition of the shafts would effect the value as well.
A true collector might give you a closer value...