It looks like it has been refinished, or at least top coated with something. The dust nibs and runny finish are the clues. I would guess someone put poly on it. Shellac and lacquer dry fast and usually don't get dust nibs (unless you are finishing it while someone is sanding five feet away).
It is nice enough that I would pay to have it professionally refinished.
Hey now it's widely accepted that their DC is one of the few gems. It might last a couple months instead of weeks .
Your setup is cool I'm not trying to subtract from that, just jealous cause i wish that i thought of it.
In all seriousness I personally couldn't pay more then $200 for a dc designed like the HF one or the ShopFox one It's not that the other are bad but it's just a stop gap between no DC and a good DC. I'd rather go cheap for the intermediate and not end up getting stuck in intermediate because i spent too much on a medicore DC.