Gothic printer ball and box
International Business Machines Corporation (IBM)
overall: 1 5/8 in x 1 1/2 in x 1 1/2 in
"IBM Selectric" is printed on the top of the box in raised letters. The ball says, "IBM DUAL GOTHIC 72" in white printed letters at the top.
Miscellaneous/typewriter & parts
Gift of Donald Knuth