Stan, 
 I have looked at your e-bay offering of the Oliver 70 Ind. and feel badly for your plight. I am in NO financial position to bid on your tractor but am wondering how it was arrived at that the tractor is a 70 Ind? One of the "before" pictures clearly shows a "25" under the radiator, indicating an Oliver AIRPORT 25, not an industrial. There may be NO difference between the Ind. and the Airport tractors, but the Airport would be WAY harder to find than an Ind, making the Airport much more valuable than an Industrial. 
 The "70" series tractors had a brass plate on the left side of the engine block that had the tractor serial number on it. This plate is easily seen in a photo of the block. If the serial number you give in your e-bay description is from the old block that was cracked and discarded, you have lost the original serial number to the tractor. 
 I am surprised that this unit has a belt pulley on it as I can't imagine what it would be used for on an Industrial or Airport tractor. 
 I hope by bringing forth these observations you may be able to answer some future bidder's questions a bit more enlightened and be able to recieve bids worthy of what this unit should command. From the pictures and what you wrote and the fact that it is either a 70 ind or Airport 25, my feeling is that your "Buy-it Now" price ( for the state of restoration it's in) is only HALF of what it should be. 
 Best regards and good luck.
                                                  Jim Thurnau