This is a rare 1984 vintage IBM Professional Graphics Controller also known as the PGC that was designated asIBM Assembly # 6323697. The PGC was manufactured by Vermont Microsystems for IBM.
Curtis Priem, who later co-founded nVidia, designed the PGC while working at Vermont Microsystems.
When introduced to the market by IBM, the PGC had a list price of $4,290 in 1984 dollars. The PGC was tasked for CAD and was the most advanced graphics card for the IBM XT.
This is a great artifact for a collector.
The PGC will be securely packaged for shipment.
It is being sold AS-IS. I have no way to test it.
If you would like additional images or further information, please contact me.