Original issue, US Army Technial Manual, 44 pages, size is 7 3/4" x 10 1/4", stapled, three hole punched, dated 14 May 1959.  This is not a commercial copy or print but an original issue government print issued in 1959 and republished in 1992 to include Changes 1 through 4.  This publication is titled -  TM 11-6605-200-12, Operation and Organizational Maintenance for Aircraft Magnetic Compass Type J-2.  Publication is designed to provide information and instructions for the operation of the J2 Compass and for the repair and unit maintenance requirements and procedures at the unit level of maintenance.  Very well illustrated using photographs and clear and detailed line drawings.