The card is a pale, translucent green covered by brass-colored printing on the obverse side and silver-colored solder lines on the reverse side. The obverse is covered with burnt-orange, baby-blue, black, red, yellow, and silver components; the three identical silver-colored, circular components are marked "820 SDS306." The obverse substrate is marked " SER SDS-65" on the right side, and "ASSY NO. 116029, BAND GATE, and BT11" along the bottom. "187" is written on a small, round, sticker at the bottom edge. The reverse side is marked with six black stamps, and an oval sticker that reads "128095-C."
Date
1969 ca.
Manufacturer
Xerox Data Systems, Inc. (XDS)
Identifying Numbers
Model number
BT11
Located on obverse-side, bottom-right corner
Other number
116029
Located on obverse-side, bottom-right corner
Other number
128095-C
Located on reverse-side, bottom edge, on white sticker