The object is made of black plastic. There are 15 resistors on the component side. On the back side of the object are only contacts.
Xerox Data Systems, Inc. (XDS)
||137135 REV C
||On right side of module.
||On back of module.
overall: 3/8 in x 3 3/8 in x 1 1/4 in
SAP Collection, Computer History Museum