I examined all three cars.
The 1972 that did not sell is a very rough car. Not well sorted, not well presented, ridden hard and put away wet. Not at all surprised the bidding stopped short of what the seller wanted.
The 1973 that sold, at a bidding price of $67,000, appeared to be a very well bought car. Everything on the car that could be seen presented itself as near stock and in very good condition. Of course, the real problem with auctions like this is the inability to put a Pantera up on a lift for a proper chassis and sheet metal rust inspection. If this car successfully passed such an inspection, the buyer did very well.
The 1974 that did not sell appeared to be the best of the three cars presented. Not surprised that it remained unsold at the bid of $70,000.
Larry