IBM Adjustable Keyboard Numeric Keypad Option

Provided by the ASK Keyboard Directory

webwit (public domain)
1994Model M15 Numeric KeypadIBM membrane buckling springsMore info on this keyboard

eg, P/N 1403599

Numeric keypad option for IBM Adjustable Keyboards or Lexmark Select-Ease Keyboards, likewise based on the Model M1/M2 design.

Sources

ASK. Admiral Shark's Keyboards original content. License/note: CC BY-NC-SA 4.0.