Topps 1968 3-D test wrapper... any advise?

[Stu]

Hello, everyone.
Could I ask for a bit of help? I'm new here, basically. My brother Rick and I want to sell this and are thinking of putting it on eBay, but we're puzzled at what opening bid we should ask for because there's so little information out there.
Googling we find that Legendary Auctions sold one in August 2002 for 1188 (with a buyer's premium) and another on 6/21/2007 for 2167 (again with a buyer's premium). The one that sold in 2002 had a 1/2 inch tear in the blank and the one that sold in 2007 had a 3/4 tear in the blank.
Ours has a triangular area missing from the blank. The two tears that took this part of the blank away are each one inch long. The scan here was done with a black sheet behind the wrapper:



The one that sold in 2002 is here:
http://legendaryauctions.com/LotDetail.aspx?lotid=26942

And the one that sold in 2007 is here:
http://www.legendaryauctions.com/Lot...px?lotid=74104

You can see that the 2002 wrapper has very vivid colors, that the 2007 wrapper is less vivid, and that ours is less vivid still. Do you think it faded over years? Or were several different color schemes printed, possibly?
What would you nice people suggest we start the bidding at? Or do you have any other sort of advice or opinion that might help point us in the right direction?
Any thoughts at all are greatly appreciated!
Thanks --
Stu (and Rick)