I have been doing PMs about a deal with a different scope, so these are available:
Tasco 3-9x $0 nothing special, just to get you by
Redfield Tracker 3-9x $50 period scope would match the gun well, but perhaps a little big
Burris 3-9x Fullfield 2 with ballistic plex $100 has a ring mark and a couple of scratches
Leupold Vari-x 2 2-7 gloss $140 would be a dandy match.
Also, make sure your local FFL will take a gun from a private party, otherwise it costs an extra $20 to go through my FFL.