What kind of componets does it have?

I'll do my best to discribe them. Almost everything is marked shimano 600 . the frame says montello'85 blue and white 21".

Fork is K Road-D Kinesis alum., Tires are Panarace Stradius zero slip trip compound 700X 20C 20-622.

Wheels are marked Mavic Cosmos (France) 6106-622X15. Seat is Brooks (England) champion special B.17.

Gear shifter up front says shimano RSX . The gismo that moves the chain at the rear wheel is shimano 600 515, or SIS.

The guy selling the bike says the componets are next to the best. in between mid grade and best. does this sound right? Thanks for all the good advice. Regars, Kirk