2010 Topps Unrivaled Joe Namath Patch Card

This 2010 Topps Unrivaled Joe Namath Patch Card has gotten me by surprise. Does anyone know the worth of this particular card? I understand the fact that since only 199 cards were made (mine is 004) getting info on the card can be difficult. I've spent countless hours in card shops, endless searches on the internet, always resulting in ZERO!! I've never encountered a card like this one, one that is impossible to get any information about it. So if anyone know the worth, and just about anything else they may no, please share it with me, and all interested parties reading this.
Thanks