Vintage HOFFMAN models  7B157, 7B157B, 7M156, 7M156U, 21B154,  21B154U,. 21B164, 21B164U, 21B167, 21B167U, 21B337P, 21B337U, 21M153, 21M153U, 21M166, 21M166U, 21M336P,  21M336U, 21P168,  21P168U, 21P338P and 21P338U        (chassis 301-17, 301-21 and 302) 19 tube TV television receiver. Original old Sams Photofact manual includes schematic, layout, alignment instructions, voltage & resistance test chart, repair parts list and description. 20 pages. Dated 1954. Hoffman Radio Corp., of Los Angeles, CA. This manual would make a sensational accompaniment to your classic video TV equipment.