The DAyton Band Instrument COmpany of Dayton, Ohio, sold its own brand of saxophones under the label of DABICO.
All DABICO saxophones were stencils, and a variety of companies supplied the saxophones for them. For example, some DABICO horns were made by Pierret, while others were made by Hammerschmidt.

Silvertone was the stencil name that was sold by Sears Roebuck during the first half of the 20th century.
Many the Silvertone saxophones were made by American horn makers, like Buescher, but some were made by Hammerschmidt, and I've even one or two by Keilwerth.

The Silvertone saxophones do not have the same round thumb screw that fastens neck in the socket that the rest of the Hammerschmidts do. These horns have conventional neck fastening screws instead.