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SNKB-M2001-WWA-92

Notes

This keyboard assembly was recovered from a wrecked IBM Wheelwriter 3500 bought for just £1.04! Seems that this keyboard assembly was in fact a replacement module of sorts and possibly made by Unicomp given the 2001 date.

Original specs/details

Full Name
IBM Wheelwriter 3500 Keyboard Assembly
Part Number
1399135
Type
Model M-based Typewriter Keyboard Assembly
Switches
IBM membrane buckling springs
Connection
Integrated
Production Date
2001-07-10
Acquisition Date
2020-05-28

About this keyboard type

The 1984-debuting IBM Wheelwriters 3 and 5 and Quietwriter 7 were the first vessels of membrane buckling springs keyboard. What would become the Model M as we know them featured on all subsequent IBM and later Lexmark Wheelwriters for the next decade. The layouts of these keyboard assemblies were vaguely PC-like, with a max of T-nav arrow keys, one or two columns of left-side function keys, and occasionally even a numeric keypad section included on various models depending on their market segment. As a result, most Wheelwriter keyboards range from approximately 65% to 80% size layouts. The common feature amongst all of them was a split spacebar with the smaller "Code" key being an additional modifier for accessing functions throughout the keyboard.