One (1) Z23 circuit board with brown translucent board. There are a variety of components on the obverse side of the board; the left top corner reads "900 El.-Rev." in white, the left top corner reads "215B 138L," also in white. The reverse side is covered by a variety of copper colored circuit lines and silver toned solder joints; the top left corner reads "Ts435", the top- right corner has a rectangular paper sticker with "LII A-25" handwritten within.