TI 0030 KModel: TI-30 Koh-i-Noor
Battery: 9 volt
Adapter: BP7TI 0030 K 01
Year: 1980
Chip:  TMC0981
Info: One of the best-selling calculators in the world, Koh-I-Noor sold it here under its own brand. Produced in the 27th week of 1980 (2780RCI) by Texas Instruments in the plant of Rieti, in Italy!