Alto II Memory Address Interface (EXTN MEM) circuit board
Xerox PARC (Palo Alto Research Center)
||Ink stamped on wiring side beneath the extractor handles.
||Labeled as "PWB NO." This number is silk screened on component side
||Labeled as "ASSY NO." The numbers are silk screened and the "E" is ink stamped
overall: 1/2 in x 11 in x 7 3/8 in
There are hand engineering changes on the wiring side.