The mom of one of my childhood friends had one of these machines. Most 600s were equipped with the straight-vane agitator, or as Sears called it, the "6-Vane" agitator. I guess they counted the three little ridges on the skirt as vanes.
Anyway, on my friend's washer, one of the vanes broke off about 2/3 of the way down, I think when they were washing tennis shoes. They had 5 kids, so the machine was well-used. Not long later, the belt broke, and his dad, who was a mechanic, didn't want to replace it, so instead they installed TWO 1963 Lady K washers that were handed down from his Mom's mother and sister. This was about 1976 or so. One Lady K was a suds saver, one wasn't. The sister's machine was much more "used up" than her mother's. How cool it was though to see two of these side by side in the laundry room next to the 600 dryer.
Another friend's mom had a 63 600 dryer as well.
I hate that we missed this washer so fast. Hopefully someone got it who will respect it, but for a buck, who knows, the new owner could ring the life out of it. I guess there's no telling unless an AW.org member mentions their good fortune and lets us know they got it.
Gordon