Vintage CBS-COLUMBIA models 7K325,  7K325U,  7K326,  7K326U,  7K329U,  7K330U,  7K332U,.  7K3257K333U,  7K334U,  7KR329,  7KR330,  7KR332,  7KR333,  7KR334,  7KR335,  7KR336,  7T307,  7T307U,  7T309,  7T309U,  7T310,  7T310U,  7TR311 and  7TR312 (chassis 3001, 3002, 3003, 3012, 3013 and 3015) 23 tube TV television receiver. Original old Sams Photofact manual includes schematic, layout, alignment instructions, voltage & resistance test chart, repair parts list and description. 18 pages. Dated 1956. This manual would make a sensational accompaniment to your classic video TV equipment.