"I will bet that it has the coils on the back."
No, they're underneath. That was a sticking point for me when I was considering this same model in white that I eventually retrieved from RCD's pile. I didn't want "forced draft" condenser cooling but I caved in, and I'm glad I did. And, it's still a very quiet running machine.
The interesting thing about the new styling for '57 is that these machines are truly counter-depth. They are designed to have a built-in look and with no coils on the back, they can be shoehorned into an opening without any need to provide for ventilation. There was also no need to accommodate exposed hinges. These machines could go right up against a wall without having to allow the obligatory few inches on the side for the door to be able to open 90 degrees. I'm sure they looked stunning with the rest of a '57 GE kitchen that had all built-ins.
The machine in the ad has been for sale before. I don't know if it hasn't sold because of the leak that's been described or what. It's probably just a gasket issue.
You can't beat the price, particularly for two-tone turquoise on pink!