Keyboard IBM model M Mechanical keyboard with ps2 attachment. 

Year of manufacture March 1987, cleaned in all its parts, tested and fully functional. Tests performed with PS2 adapter (forged with keyboard). 

All cast rivets have been replaced with steel and titanium screws, all springs have been checked, and are in excellent condition.

Label on the bottom not very beautiful, but date on plate shows Marzo 1987

Original IBM SDL cable in excellent condition as per attached images.

I am available to provide additional images if interested.