Quote:
Originally Posted by DeadheadNM
Interesting that so far these all have a “U” logo/mark. That denotes a particular foundry - I wonder which?
Also, it seems as though the non-part numbered 72s have a mark featuring more of a circle rather than a hexagon.
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last time this came up, I searched thoroughly but could not find Hex U listed but several others here with logo pictures of this type of marking..
Alloy Artifacts - Trademarks and Logos
from browsing that site, they don't seem much interested in taking on our query but maybe a smooth talking rep could get one their researchers on the case..
had these pictures handy of a couple pair of regulars..
I'll try to get better pictures of these and the extremes I have..
