Okay, looks like that is the D16 1st stage. Definitely Mares. And I also see that the Vyper line from that era included variations labelled Gold, Metal, Tec, America, & Octopus. I am sure some of those differences are based on which 1st stage the Vyper was paired with. No idea what America signified, unless that was purely a marketing play in certain regions. Looks the same as all the other Vypers I have serviced.