Site Help ID Your Mac
In a different tab or window, go to Apple's Online Check Coverage (https://checkcoverage.apple.com) and enter your serial number (etched onto rear panel). What information is displayed below the picture?
MacBook Pro (13-Inch, Mid 2009)
MacBook Pro (13-Inch, Mid 2010)
MacBook Pro (13-inch, Early 2011)
MacBook Pro (13-inch, Late 2011)
MacBook Pro (13-inch, Mid 2012)