OK, in addition to not describing what was to be compared properly in the first place and thereby confusing things (my apologies), I also did a lawyerly bit of verbal sleight-of-hand by asking which stem is A replacement, not THE replacement. :twisted:
They both are.
The too-large bright white dot, too narrow square slot, 70's-style button profile, and 70's-era thick bite zone (.168") collectively ground the pipe owner's gears so much that he had me make a period-correct one, even though the first replacement was intact and in good condition.
While not the first time I've been called on to replace a replacement, the popularity of the brand got me to wondering how many PipeWorld citizens who are not Dunhill enthusiasts cared about such details.
What did I learn? Do a better job of setting up such experiments/surveys in the future. :lol:
Again, thanks for playing. :D