HOW RARE IS IT? Jim Brown & Gale Sayers Dual Auto

[jbrown]

I pulled the card pictured below. I am having a few problems with it.
1: I can't find it on the checklist on Upper Deck's website.
2: I can't find any closed or active auctions on ebay.
3: I can't find a print run for it.
Have any of you guys seen this card before? Any idea on print run(beckett says 10-99) or value? Thanks for your help.

 

[mstng99tim]

I just checked their website and I didn't see it on their checklist either. I would email them a pic of the card and ask them about it.