Ruger 77 Tang Safety Hollow Bolt Handle

Looking at an older Ruger tang safety .30-06, pre warning bbl., has factory sights, but the bolt handle has what looks like a factory hole in it, similiar to the hollow bolt handle of the winchester featherweight model 70's. All of the Ruger 77's I have seen seem to have a solid bolt handle. This 77 is not a flat bolt. It does not seem to have extra fancy wood nor does it have a black forearm tip of the express rifles. I did not check to verify if the serial # on the bolt matched the rifle #. Did Ruger hollow out a hole in the bolt handle at one time on their standard 77 rifles? Thanks for any replies.