Vintage RCA VICTOR model 3-BX-51, 3-BX-52, 3-BX-53 and 3-BX-54 (Ch. RC-1126) 4 tube Superheterodyne AM radio receiver. Original old Sams Photofact manual includes schematic, layout, alignment instructions, voltage & resistance test chart, repair parts list. 4 pages. Dated 1954. This manual would make a sensational accompaniment to your classic radio equipment.