Some years back, I bought a complete roll cab set from the estate of R.B. (Mac) MacDonald, a mine maintenance guy who had been still using 1940s Blue Point combination wrenches from 1/4" to 1-1/4". A couple, 1/2" and 9/16", natch, had been replaced by Snap-on, and there were a few sizes missing. Unable to easily find an exact match for the late Blue Point, I bought a 1930s production 1".
They're now my basement set, where there is seldom a need for larger sizes for anything other than plumbing.
Up until I broke this one trying to remove a soil stack cleanout plug, I'd have said the old stuff was as strong as the new stuff. However, in fifty years, I've never broken a Snap-on combo in this manner.
The break is perfectly smooth, with no sign of previous cracking.
jack vines