The serial number suggests this is a ’59 rather than a ’71 or ’72 (http://www.jeeptech.com/models/cj-5.htm).

“1971 OR 72 JEEP WITH A PLOW AND TRENCHER. THE TRENCHER IS MADE BY JEEP A TRENCH GEAR HYDROLIC MODEL GW103 SERIAL #2817. THE PLOW AND TRENCHER IS IS GREAT SHAPE AND WORKS GOOD. THE JEEP IS IN EXCELLENT CONDITION, #5754897216, WILLYS CJ5, TIRE TREAD IS FAIR. THE MOTOR HAS JUST BEEN REBUILT AND IS A 134 F HEAD. THIS IS ALL FACOTRY AND HAS BEEN REPAINTED. NO RUST SPOTS OR MAJOR DENTS.”

http://eastco.craigslist.org/grd/1965913306.html