"since it seemed to embody technology which used to be considered far beyond the roughly 60 BC societies that created it." FTFY
According to the post-19th C Spinners-of-Tales that classed themselves as "historians". There's plenty of surviving sources and artifacts that clearly show knowledge of what we would class as "machinery" including gear systems, and a level of technological ability that rivalled if not surpassed our own in some ( now "obsolete" ) areas.
Most of that stuff would have been trade secrets, and would not have been widely known, but you can see the *results* in the existing archaeology and whatever has been preserved. No tinfoil hat needed.
But I do hope they manage to find more pieces. It's an elegant thing, judging from the recreations I've spotted around, and a really nice piece of brainsweat.