Do you have any pics or a link to share? Unless the table is apart, it's going to be tough to tell what you're getting. Any idea where the table has lived? Pool hall or private residence? If the wood grain formica on the rail tops has worn, it is likely the table saw LOTS of use over the years. Most issues are chewed up rail wood and slate backers from many recovers or cracked slate. Check to see if all the hardware appears to be in place: rail bolts, ball return, pocket liners, etc. If it is a GCI (unlikely to be a II given they were only made for 3 years) have the cushions been replaced and if so, were the rails properly calibrated to accept modern K55 profile cushions? If it is a GCIII, have the cushions been replaced (no need for rail calibration on III's)? Some GCIII's left the factory with defective rubber that aged prematurely; some are good, some are not.