I recently acquired a Gridcase 1520 laptop computer that originally launched in 1986. More info here. This one looks to be from 1989. This is a 80286 system with a magnesium case and was originally used in the military and was the original ruggedized laptop computer. Sadly, my screen broke in transit

The keyboard is fully mechanical and clicky. The switches are Honeywell as well as the entire keyboard assembly and most of the key caps are triple shot moulded. Lenovo has nothing on this keyboard!
Here are some pics: