This is one of a set of four cards that have guitar picks in them. These cards were given out at the 2011 San Diego Comic Convention during the Glee panel discussion. Research indicates that four cards were given out at that time. Each card had four guitar picks in them; there were four different colored cards (Worthpoint.com, Glee Guitar Picks Promo San Diego ComicCon, 2023).
This particular set of picks are part of the ‘green colored card’ and the words “glee fox” is printed on the back. The four picks have a single character printed on them. With this one there is Artie Abrams (played by Kevin McHale), Kurt Hummel (played by Chris Colfer), Ms. Emma Pillsbury (played by Jayma Mays), and Burt Hummel (played by Mike O’Malley).
Each card was made in this fashion. Each color had a dedicated group of character associated with it. Meaning the green cards all had these four characters. This particular set has some mild wear it, this is assumed to be during transportation, around the Burt Hummel pick.