Plastic but not fantastic

Anybody know what the deal is with these plastic boards? I see them on eBay every once and a while. At first I thought it was some off the shelf Santa Cruz stickers stuck on some new Chinese crap in order to pass it off as “old school.” I’ve seen construction like this before, and I want to say it’s a late 90’s phenomenon at the earliest. However, that sure does look like an old school truck mounting pattern. I give up. Are these bona fide NHS gear from a past era? Don’t get offended. All the major skateboard companies have done sketchy things in the past. Or in fact, are these the work of a con artist with a stack of stickers? Sa ka roulé has amassed a stack of photos of these injection molded mysteries.