Handwritten in pencil on top of the metal disc area.
overall: 1 1/8 in x 1 1/4 in x 1 1/4 in
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. There are six pins coming through holes in the metal disc. On the metal disc there are some notations in handwriting, including the numbers and "GND".