Unknown General Instrument Series S700 keyboard
The images below depict an unidentified General Instrument S700 Series foam pad capacitive keyboard. This keyboard has black-on-beige double-shot keycaps and a DIN-5 plug.
The images are archived from eBay listing 172677881742 “Mechanical Keyboard with White Square Spring Switches Made in 80's Rare Item”, since deleted. This listing belonged to eBay user K-Sys Vintage Computer Parts.