We have always considered and collected these commercial masks and helmets as industries tribal art. Examples can be elegant in their simplicity or bazaar and complex. They are always unique, suprising and filled with personality.
1913 Murdock Crystal Radio Breadboard
This is a nice clean Murdock breadboard. It consists of a signed Murdock variable condenser (loose coupler) and signed receiving transformer. The winding on the coil is clean but needs to be tightened... $1400