A great vintage full page original magazine ad. Ad measures approximately: 6 1/4" x 9 1/4". Condition: EXCELLENT. Astonishing Electrical Invention Protects Your Car from Thieves..Automatically! This unquestionably is the queerest, most incredible invention since the first discoveries of radio! A magical, shouting, automatic watchman that actually is far MORE than human! Never sleeps, rests or gets tired... A startling, Uncanny Money maker for Agents! A wild and crazy gadget from 1930!!! Certificate of Authenticity is provided to show that this piece is from an original magazine (not a copy).