VIN/Trim tag will be riveted/screwed to a dash brace under the glove box.
Engine color will be "Chevy Orange".
You'll want to look for pretty much the same things you would with a Shark car, as far as frame/birdcage rust, especially just in front of the rear tires.
Check to see that the headlights work! These are electric lights, and they use two different switches to operate them...be sure they both come on, AND rotate properly.
Check for large, or uneven gaps between the doors and the front fenders...the front ends on early Mid-Years are prone to sagging, so you might see a larger gap at the tops of the doors than you do at the bottoms.
Anything over 1/4 turn of the vent window crank without movement in the actual window means the vent window regulator is worn....very common issue.
IF it has an electric antennae, check to see if it works...all the way up, and all the way back down.
IF it's a fuelie, it should start very easily, and idle nicely.
Drum brakes all around...if you get to drive it, be aware of that...see if it tends to "pull" in one direction or another when stopping.
Look to see if the bumpers are straight, and mounted straight...they tend to sag a bit at the outer corners.
Lots of stuff to look for on Mid-Years, and with prices the way they are even on not-so-great examples, it might be a good idea to get another opinion, IF your check seems to point to a good car/buy.
hth
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Joel Adams
C3VR Lifetime Member #56
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"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"