(Still not technically in the mail yet but... I got excited 

) 
A month ago I mentioned old keyboards to my father, and he said to me that one of his colleagues had an old keyboard at work...
So today he sent me this : 
Show Image
 :eek:
And this : 
Show Image
According to wikipedia and the (partial) s/n, I guess it's :
- made by IBM UK
- Buckling Spring
- detachable keycaps & cable
My dad's colleague gave it to my dad for me without giving it much thoughts.  
