1989 IBM model M (1390131) Made by IBM 17 JAN 89


part# 1390131
serial# 3155473
date 17 JAN 89 (28 years old)
IBM logo silver logo with black text
cable removable, coiled SDL to ps/2 cable (new)
key caps removable (two piece, key stem + key cap)
key switches clicky = buckling spring
Designed when “real” typing on a quality keyboard was a required skill to use a $4000 IBM personal computer. PC mag link
(pre-dates the then new mouse-click and graphical user interface operating system later to be known as Microsoft Windows 3.1 and 95)
condition Keyboard pre-selected as good candidate and passed initial testing to confirm mechanical condition.  Upper keyboard case disassembled and individual 101 keys have been removed and fully cleaned by hand.  Inspection of interior plate.  Any missing rivets drilled out and replaced with M2 precision screws to restore internal integrity.  Interior plate vacuumed to remove foreign debris.  Keyboard re-assembled and re-tested post-cleaning. Individual photography of rear label.
comments Very nice IBM model M keyboard with silver IBM logo.  Has additional stabilizer bars under numeric + and Enter keys in addition to stabilizer under space bar.
comments This keyboard is tested to work 100%. The keyboard assembly has been confirmed to be in functional, operational condition.
comments Interior keyboard found in excellent condition, no additional dusting or deep cleaning was necessary.  Keyboard has yellow wires to LED and metal stabilizers under the numberpad Enter and numberpad + keys.  Only a select number of plastic rivets were found to be loose and were drilled out and replaced with M2 screws.  IBM silver logo badge in very good condition (see last photo)


Additional information

Weight 7.1 lbs
Dimensions 24 × 12 × 3 in

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