Adjutant printer ball box
International Business Machines (IBM)
overall: 1 5/8 in x 1 1/2 in x 1 1/2 in
"IBM Selectric" is printed in raised letters on the top of the box above a sticker with "Adjutant" stamped on it. The printer ball that came in this box is now in the selectric printer.
Gift of Donald Knuth