The Antique Phonograph Gallery • Rapke Collapsible Horn (1907) March 30, 2014mainspring001 One of a number of collapsible horns marketed in the early 1900s; these ads date from 1907. Other collapsible or portable models included fabric horns with folding umbrella-type metal ribs, and sectionals that bolted together for use. Share this:TwitterMoreFacebookEmailLike this:Like Loading... Related