Fully Original Apple MacBook Pro A1278 13.3" Laptop, Intel Core i5, 4 GB RAM, 500GB  HDD. Fresh Install of Mavericks 10.9.
Fully working with original Power adaptor, Nice clean unit, Some minor scuffs and scratches but in excellent used condition. Unit pictured is what you will receive. 

Only 83 Battery Cycles.
258 hours on unit.

Following info is from From Serial Number Lookup

MacBook Pro (13-inch, Mid 2012) Silver A1278
ModelMacBook Pro (13-inch, Mid 2012)
Family No.A1278
Machine IDMacBookPro9,2
ColorSilver
Production date 2014-08-12
Resolution1280x800