I just picked one up from my local center's fire sale of miscellaneous stuff. I'll have my pro shop measure for it, but where is the CG stamped on this ball? The existing drill has the pin just right and above the grip center with the label upside down. I don't know if it was stamped upside down, or the driller saw some benefit of doing it that way.
I'm a sucker for relics plus I need more of a control ball for the medium sport patterns. Usually real old balls still hook and hit fine, but are more mellow than the new stuff.