TC26-319 RADIO TOOL SET. Yankee No. 106 IOB. One of North Brothers' least common tools, marketed in the 1920s specifically to be used on new-fangled radio sets. In this case, the No. 105 set has been combined with a No. 1431 Radio Drill in an expanded version of the kit. Includes most attachments but missing the screwdriver. Wooden box has wear with 75% intact decal on lid. Some surface rust on parts. From the collection of Jim and Christa Schoenky. Good 75-150