IBM clicky keyboards

other IBM keyboards	date	model	serial#	logo	comments
	August 1981	2683239	630-x-91-xx44438		IBM DisplayWriter keyboard weight: 14 pounds not PC compatible
	April 1983	4584656	323429A		IBM XT keyboard not PC compatible
	1984	6090817	528466		IBM AT keyboard PC-compatible
	19-Jan-1987	1390238	1059905		IBM terminal keyboard 122 keys 24 function keys (double row) detachable keyboard cable 5-pin DIN connector not PC compatible
from IBM mainframe	?	1395660	?		IBM terminal keyboard 126 key keyboard cable attached RJ-45 connector not PC compatible
	06-03-1993	1370478 Model M5-1	0001943		attached keyboard cable ps/2 connectors (one for keyboard, one for trackball)
	06-30-1995	72G4644	0157763		attached keyboard cable ps/2 connector not buckling spring (not clicky)
	08-Nov-1994	84G2525	0002121		built-in pointing device not buckling spring (not clicky)
	04-28-1995	1395300	528952		clicky
	19-Aug-1993	60G3570 Model M1	0007382		clicky
	22-Jul-1994	73G4614 Model M2	0034961		not buckling spring (not clicky)
	07 Aug 1995	60G0817	8817011		not buckling spring (not clicky)
	August 1996	07H0665 (KB-8923)	0238726		not buckling spring (not clicky)
	12/1998	02K0805 (KB-7953)	0248174		not buckling spring (not clicky)

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