This is going back a ways to the brief period I was employed in the biz...
I think the original Clearwater F&F was built on the same blank as the high end Superfine F&F, Assembly of the rod though was outsourced offshore. I think.
The Green Mountain F&F (and there may have been a Rocky Mountain as well) was US built, same blank as the Superfine. The rod tube was not nearly so fancy and as I recall, the finished rods were more rough in feel and appearance having been sanded less. The windings were also a little cheaper, etc. and it had an all aluminum uplocking reel seat. Same rod as the Superfine in terms of function though.
This is at least how I think I remember it being at the time, which was circa 1993-94. I could be way off though. Lately, that's been happening to me more and more...
I have 2 Premium/Superfine F&F's. One from 1983 and another from 1988. I do considerably less trout fishing these days than I did during the period from 1975-2014 and I really don't need two of them any more. On top of this, I bought an LLBean 7'10" Pocket Water for a 5 wgt. on a whim when I needed a 4-pc for travel, etc. Turns out I like it as much as my F&F's even if it is made somewhere in Guangdong province. So, one of my F&F's may be on the block before long. May..
Watch this space..