Artifact Details


7101 Central Processing Unit 13 (IBM Stretch)

Catalog Number



Physical object


International Business Machines (IBM)

Place Manufactured

N.Y., U.S.

Identifying Numbers

Model number 7101 Found on the label on the right front door of the unit.
Other number 13 Unit number found on the right front door.
Other number 13B1A12F Master sync. number printed on a paper tag on the card cage chassis on the right side.
Other number 21-13-B1 Written on one group of ribbon cable.
Other number 2116B Found on the ribbon cables.
Other number X-7101-30003 M1 Found on a metal tag on the right CPU frame.


overall: 69 in x 20 in x 66 in


This object has a metal frame, open on both sides, and a door on the back. The front two thirds of the frame contain a roll-out unit with two hinged card cages. The cages are filled with IBM modules. At the top there is an orange add on bracket with one screw protruding from the middle. The back third of the frame is for cabling. On the front above the roll-out units is a yellow sticker reading, "Master Sinc."




Gift of Lowell Wood

Lot Number