.. and if someone is producing 'NOS', using the original tooling, is there really any difference?
The quality of the metal alloy might be one big difference. Besides if there were a factory cranking out Campagnolo copies then we would see a lot more of it for sale and steep declines in prices. Campganolo had giant production runs during the 70s and 80s so if hundreds or even thousands of the parts survive in new condition it is not a surprise.
I'm not saying it's happening, just that it wouldn't surprise me if it was. As you say, 'cranking it out' wouldn't make sense economically, plus presumably the market is much smaller than it was when the stuff was state-of-the-art, but lucrative nonetheless. By the same token, any profit-oriented business (is there any other kind?) with an industrial-scale stock of genuine
NOS would be drip-feeding the market, pretending the stuff was rarer than it actually is, to boost the price.
Just to clarify my
position, in response to earlier posts- I believe I was the first to mention NR/SR specifically, as an example of something out of production but in demand, which would be a money-spinner for anyone who can meet the demand. That's not a suggestion, just an observation. It doesn't have to be China, either. If anyone is implying that the denizens of any particular location are either dishonest, or metalurgically incompetent, or both, it ain't me..