My spare pair arrived today, I bought them from OpticsBestBuy at $164.99.
The serial number is within the same 1000# range as my other.
The hinge is slightly stiffer and the focuser slightly rougher.
I have some kind of feeling that the newer is even a hair sharper and possibly even more color neutral. I also have a feeling that my older one handles back-lighting just a little better. But the newer performs markedly better in the street lamp test, where the old has some problem in the right barrel.
The older gives a slightly more relaxed view while the newer is crisper.
Anyway, the differences are very subtle.