Chainsaw Repair

Not sure why, but I decided to dig out the 300 anniv 3120xp I got from my father-in-law with an Alaskan mill.  He bought it from a faller friend who moved up from Oregon back in about '94.  Did about a dozen 2x10s to the best of my knowledge, & then put it away.  I had never started it although I did put some WD 40 in the cylinder & pull it through a few times when I got it(it was NOT seized & has been stored in a heated dry area, just being nice to it). 
Put fuel in it & gave it about a dozen pulls & shazem!!!!  The beast roared to life & sat there & idled like it had been run yesterday.  Chain was duller than high school english but I cut a couple cookies & it ran like a champ!  Not sure why I'm even hanging on to it but I'm thinking of buying the chain brake stuff (they evidently through it away when they put it on the mill) for it so it will be a complete runner.
What are these beasts worth nowdays (powerhead only)?

I traded my stock  PHO 3120 runner for a PHO woods ported 346 and a like new  262xp PHO.  PowerHead Only.