Diagnostic card deck
||Engineering change number stamped on the envelope
||Stamped on the envelope
||M/C no 5503406
||Handwritten on the envelope
Card: 1/8 in x 2 1/4 in x 3 1/4 in; Envelope: 1/8 in x 4 1/8 in x 6 3/8 in
The record contains 11 IBM punch card of the small size used with the system/3. Found inside a card punch catalogued separately as an example of an unusual card format.
SAP Collection, Computer History Museum