Last year my girlfriend and I each received a "year of a million dreams" lanyard, each with two pins, one Mickey and Minnie, and one Donald and Goofy.
One of my girlfriends pins was lost while riding Space Mountain last week and I immediately gave her one of mine, figuring I could find one on ebay.
Well, I did end up finding a replacement on ebay and it arrived today - but something isn't right with it. It's much lighter and thiner than the originals we have. The font around the inside of the circle is smaller. Perhaps more importantly, there are flaws in the metal on the back of the pin. The flaws look to be left over from manufacturing. I've never seen a Disney pin with flaws on the back like this. Anyhow, I only paid $2.50 for it, so it's not worth returning it and asking for a refund...
Here is the specific pin from pinpics.com