Alps Working Timeline

This document represents a working timeline for Alps key switches. The dates gathered here are representative of those members of Deskthority who have provided this information with appropriate subject references. It is not meant to be exhaustive or comprehensive but a community effort to establish a timeline for the purposes of collaboration and discussion.

	Switch	Approx. Years found	Earliest Date	Earliest Subject	Latest Date	Latest Subject
	Alps Magnetic Reed
	Alps SSCH series		1975	Monroe 1405 calculator
File:No photograph.svg	Alps SKCC Grey		1979	Monroe 2805 calculator
	Alps SKCC Tall Cream
	Alps SKCC Green
	Alps SKCC Lock
	Alps SKCL Green	1983–1989
	Alps SKCL Yellow	1988–1998
File:No photograph.svg	Alps SKCL Cream
	Alps SKCM Amber "Taxi yellow"	1986–1988
	Alps SKCL Grey
	Alps SKCL Heavy Grey
	Alps SKCL Brown
	Alps SKCM Brown
	Alps SKCM Blue	1985–1988
File:No photograph.svg	Alps SKCM Cream
	Alps SKCM Orange	1987–1991
	Alps SKCL Lock
	Alps SKCM White	1988–1996
	Alps SKCM Salmon	1988–1992
	Alps SKCM Black	1988–1996
	Alps SKCM Cream Damped	1988–1994
File:No photograph.svg	Alps SKCM Green
File:No photograph.svg	Alps SKCL Double Action
	Alps SKCL Compact
	Alps SKCM White Damped	ca. 1995
File:No photograph.svg	Alps SKBL Yellow
	Alps SKBM Black
	Alps SKBM Grey
	Alps SKBM White	1996—2012
	Alps buckling spring
	Alps common mount low profile
	Alps SKFL
	Alps SKFL LED
File:No photograph.svg	Alps SKFL Compact
	Alps SKFL Lock
	Alps SKFR/SKFS
	Alps SKFR/SKFS
	Alps integrated dome
	Alps integrated dome
	Alps integrated dome
	Alps integrated dome
	Alps integrated dome
File:No photograph.svg	Alps spring over membrane
File:No photograph.svg	Alps moulded spring over membrane
	Alps plate spring
	Alps semi-integrated dome
	Alps ultra low profile