Up for sale is an incredibly rare vintage Hall Effect keyboard manufactured by Micro Switch (Honeywell) in Freeport, Illinois, USA. 

Model / Catalogue Listing: 55SD11-1-1

This industrial data entry keyboard features legendary Micro Switch SD Series Hall Effect magnetic switches, highly sought after by vintage keyboard collectors and custom mechanical keyboard builders worldwide. Features thick, high-profile retro keycaps and an alphanumeric layout with special system function keys.

Condition:

The keyboard is visually in authentic vintage condition. Please note: The spacebar keycap is damaged/missing, but the underlying mechanical switch mechanism moves freely and feels completely functional. 

The unit is otherwise untested as I do not have the terminal main system or the interface cables. Sold strictly AS-IS for parts, repair, harvesting, or collection. No returns.

Worldwide shipping available with professional, safe packaging.