Vintage Radio Service Manual  - ARVIN model 444M & 444AM (Chassis RE-200M) 4-tube. Superheterdyne AM radio receiver. Manufactured by Arvin Industries Inc., of Columbus, IN. Dated 1947. 2 pages. Original old Sams Photofact manual (Supplement) includes schematic,  voltage & resistance test chart, repair updated parts list. This manual would make a sensational accompaniment to your retro audio equipment.