We Had...
...The '59 version of that same fridge, in white. Ours had the turnaround shelves, and no "glamour" overlay on the freezer drawer front. It was also frost-free only in the refrigerator compartment; you had to defrost the freezer (a job that seemed always to fall to Yours Truly). I think GE made total frost-free available in '60 or '61.
But it was a very long-lived unit, giving up the ghost only in the late 1980s, after 30 years of very hard use. Mom is not, shall we say, inclined to coddle appliances. In hands such as yours, a GE of this era should last many, many more years. By the way, you will love the butter compartment; it can keep butter at spreading temperature, yet fresh-tasting. And the step-on pedal for opening the door is a genuinely helpful convenience, unlike the idiotic electronic "features" on today's reefers.
Ya done good.