Based on the condition of the machine from the photo, it is either an older restoration or a very nice original survivor. $300 would be a great price for a first "round top" Coke machine. I agree that the 83's were not greatly popular, but it is still a 1950's Coke machine... Prior to forking out the money - make certain that the bottle drum in inside of it. If that is missing, price decreases. People were known to remove the drums from those machines and use them as a garage refrigerator. Drums can be found, there is a company called Funtronics that specializes in parts for these old machines. I would guess if it was complete and cools, that $500-$700 would not be very far off as far as value would be concerned. Heck, the coin mech, chrome Vendo bezel, and coin door are probably worth about $350 alone. ($100 for a complete mech ; $150 for a non-pitted entry bezel; $100 for a rust free Large Mech Vendo coin door...). If you can get this for $300 JUMP on it. Miller Lites will fit in it just fine!