In checking pictures of OEM tool kits for early 911s on the Registry and Pelican, I have noticed that some of the Klein lug wrenches are stamped "19MM" on the handle and some are stamped "19MM" on the outside of the head or "barrel" of the lug wrench. After looking at several pictures, it seems as though the lug wrenches included in the 1970 -71 tool bags were stamped on the barrel while those included in the 1972-73 tool kits were stamped on the handle. Is that a correct assumption? Was there a difference in the stamping of the lug wrenches included in the tool kits for 911s versus 914s and 914-6s? Can someone please explain the difference between those stamped on the handle and those stamped on the barrel? Many thanks, in advance, for your help!

Hoyarunner