Vintage Silvertone 700 Model 2218 All Transistor Radio Sears Roebuck 1961 Rare! I put 6 C Batteries in to test but couldn't get it to come on Nice Looking older radio Technical Specifications Number of Transistors 7 Semiconductors Main principle Superheterodyne (common) Wave bands Broadcast only (MW). Power type and voltage Dry Batteries Loudspeaker Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 4 inch = 10.2 cm Material Leather / canvas / plastic - over other material from Radiomuseum.org Model: Silvertone 2218 Order=57G 2218 - Sears, Roebuck Chicago Shape Portable set > 8 inch (also usable without mains) Dimensions (WHD) 9 x 5.5 x 3 inch / 229 x 140 x 76 mm Price in first year of sale 28.95 $ Literature/Schematics (2) Sears, Roebuck Catalogs (Silvertone) (Fall/Winter 1961, page 1235.) Author Model page created by Noemi Erb . See "Data change" for further contributors.