I just picked up this 1954 GE refrigerator for free. In decent shape, just dirty. It is missing the bottom glass shelf that the drawers slide on. Also the plastic fronts on the drawers are cracked. Unknown working condition.
Ken meant the "shelf" that creates the top for each of the crisper drawers. That's plastic too, not glass.
I've attached a shot of what they look like on my '57 Combination. It looks like the fridge might also be missing the prop that holds them up in the front between the two drawers.