Part of this set:
http://www.tradingcarddb.com/Subsets.cfm/sid/3498/1995-Collector's-Choice-Update---Stick-Ums
Set looks ok, but this sticker is not listed (as the backs of the 90 stickers in the set have backs). I found 1 of these on ebay and there is a listing for it (sold out) at COMC. Usually promotional or samples were labelled as such from Upper Deck, but this may before the big promo boom.
-- Dan --
Note: Please see my profile for more info regarding trading (section updated 3/4/2024). I have added a large portion of my inventory to the site, and currently have trading turned on (details are in my profile).