When I got home I did a little research online and found an article explaining how PepsiCo won the 2010 CO3 Award. Rather than try to paraphrase it, here's a link to the article.
Looking at the picture below on the left, I'm led to believe this may have been a four-can set with this being the fourth can since the number 4 is highlighted.
Regardless of what brand or flavor or special occasion, gold cans are always attention-grabbers. This one grabbed my attention and now sits with over 300 other Pepsi cans in my collection.