Radio Shack EC-4041 SCIENTIFIC Calculator Dual Power Direct Algebraic Entry

Radio Shack EC-4041 Scientific Calculator Dual Power Direct Algebraic Entry R200

Radio Shack Calculator Direct Algebraic Entry EC-4041 Scientific Dual Power

Radio Shack EC 4034Vintage Graphic Scientific Calculator Not Tested

Radio Shack EC-4032 Scientific Calculator w/case ~ Tested

Radio Shack 1988 EC-4031 Scientific Calculator Solar Power Only

Vintage Radio Shack 10-Digit Scientific Pocket Calculator with Case EC-4028