Found on the black sticker on the bottom of the machine
Matr. number on black sticker on bottom of machine
Ruf (0221) 2105 05/06
Found on black sticker on the back on the machine
overall: 7 in x 15 in x 6 11/16 in
This KB 6 calculator control head has 16 numbered remote display units attached to a gray keyboard. There is an "IME KB6" metal label attached to the front. Underneath there is a silver sticker outlining the line voltage and connectors. There is a black power cord with a European plug at the end.