Original issue, US Army Technical Manual, 58 pages, size is 4 1/4" x 6 1/2", stapled, three holes punched, dated 22 June 1967.  This is not a commercial copy or print but an original issue government print issued in 1967 and republished in 1984 to include change 1 through 4.  This publication is titled - TM 11-5805-201-12, Operator and Organizational Maintenance Manual for Telephone Set, TA-312/PT.  Publication is designed to provide complete information and instructions for the operation, use and operator and unit maintenace requirements and procedures for this field phone.  Very well illustrated using photographs and detailed line drawings.