That's really an unusual Card.
All I have are the "close" Model Numbers for the known Banshee Variants (their PCB's look all different, though, and they're all 16MB Standard designs) :
600-0035-03 (InnoVision Mighty Banshee)
600-0035-05 (Quantum3D Raven)
600-0043-01 (A-Max ColorMax VA-513)
600-0044-02 (Guillemot Maxi Gamer Phoenix)
600-0027-03 was assigned still to the Voodoo2 Design.
(Trust Voodoo Dragon 2 / Skywell Magic 3D II)
So it looks like 600-0033-03 is the earliest Banshee assigned Model No. I've seen so far. No Info available on the Internet though, but almost for sure built for the Asian Market.
Found only one reference and Images of it here, on the excellent Asian "Old Hardware" Site :
http://www.yjfy.com/oldhard/list.htm(many of the rare/odd 3dfx Variants unheard of are in their Archive)