On My 52 M38CDN the original rims 3 have the small 1/8 hole, 2 are stamped Kelsy Hayes all had the valve stem line up with a lug nut and all had riveted centers.
on my 1953 M38A1CDN all were stamped Kelsey Hayes, none had the small hole, all the valve stems lined up with a lug nut, and all had riveted centers.
On my 71 M38A1CDN3 No stamping, no small hole, all the valve stems lined up with a lugnut and the centers were welded.
Quite a while ago an old guy
like me now! but much wiser told me you could tell the M series military rim from the civy cj type by the fact that the valve stems line up with a lugnut on the military ones.
Of course I cannot verify any of this but I find myself peering at every vintage jeep, civy or military to see what the stems are doing and right now the aspect seems to be accurate.
