Yes I do seem to have collated an extraordinary amount of Kona related information over the years. It's all documented on my Computer, so it's good that I can share it on here. I would go as far as to say that it's more comprehensive than contacting Kona Tech. They have previously told me that they have gone through so many System updates, that those still with the Company are working more from memory now regarding questions asked of them on bikes made back in the 90's.
After some Googling it seems Super cycles had a own brand called “Guess”. I’ve also noticed the bars it came with have “Guess” on them too. So I’m going to say it’s correct to say it’s a guess frame as that’s what the decals appear to say too
Sounds very likely - nice esoteric thing. Well done for tracking it down. Now to sort whether the Easton sticker is genuine. Quite a few Kona had that kind of bridge IIRC - Pipmeister is that right? Which does suggest USA made?