Walberg & Auge was a music store that became a manufacturer. Drums were made before 1910, then it became a component maker. Barney Walberg is attributed as the inventor of the high hat.
The typical name used for Walberg products was “Perfection”. Their key product though was the shell mounted tom.
In the late 1930s a Slingerland dealer Bill Mather designed the new mount and got Walberg to make it. [Source: The great American drums and the companies that made them, 1920-1969 By Harry Cangany, Rick Van Horn ]