As far as I can tell or have been able to find out Creative Labs was first to market with Voodoo II cards sometime in March of '98 correct?
Check out the image below-
Card has a build date of 08-98 (eighth week 1998) and is stamped on the back "3dfx, inc." "QAT 2" (quality assurance team?)
Dates on the main chips is 03-98 and 06-98.
UPDATE
Card is confirmed as pre-production board from 3dfx by ex-3dfx employee. Stamps also confirm it was from 3dfx Inc.
Image Insert:
(https://www.3dfxzone.it/enboard/../public/uploaded/gdonovan/200491019110_preproduction_v2.jpg)
95.79 KB