sr 35ncModel: SR-35NC
Battery: 
Adapter: 
Year:  1978
Chip: TMC0981
Info:  Interesting calculator, this German edition of a TI-30. The Privileg SR-35NC is indeed nothing else than a Texas Instruments TI-30 with a restyled and translated key plate, and a sticker instead the molded TI-logo and TEXAS INSTRUMENTS nameplate.