Horn-u-Copia's Display of Makers

Established by August Piering, who was succeded by his son, Robert Piering of Adorf. He advertised as a supplier of horn, trombone, and trumpet. And obtained a patent for a trombone slide stocking.

F.W, Piering of Dobln advertised in 1899 as specializing in horn and trombone

Also in Adorf was another son of August, Friedrich August Piering.