This record contains one single channel tube part. It is composed of a disc-like piece with a cylinder protruding from its center. Underneath the metal disc is a ceramic component with brackets and silicon reflective pieces, with a copper mask on its bottom (but the copper mask has fallen off). There are five pins coming through holes in the metal disc, and these pins have coiled wires attached at their ends. The pins are also encased by ceramic tubes. There are three tabs of sheet metal on the edges of the disc.
Handwritten in pencil on top of the metal disc area.