Oil condensation above cam cover

[pappy.72]

I looked at a 1990 ZR-1 today with the possibility of purchasing it. The only thing I noticed was a small amount of oil type condesation above the cam covers on the side under the intake manifold. Could this be just from a poor seal around the cam cover on top or is this a tell tale sign of other issues. The car has 47000 miles on it and is at Corvette Mikes Midwest in Illinois so any other info on this car would help if possible. The car is in great shape outside and inside with original wheels, two tops and all paperwork/manuals/owner history. It has a replacement standard windshield but other than that and the tires it remains completely stock.

http://www.corvettemikemidwest.com/I...ails/1325.html