Sinclair Cambridge Calculator With Original Case - Black Working 1970s Vintage

Sinclair Enterprise Programmable Calculator - BOXED - WORKING - Manuals + Power

Sinclair Cambridge Scientific Calculator

Vintage 1973 Sinclair Cambridge Calculator With Memory Function Red

Vintage Sinclair Scientific Calculator w/ Case

Sinclair Cambridge Programmable Calculator & Soft Pouch

Sinclair Cambridge Programmable Calculator

Vintage Sinclair Oxford 100 LED Calculator Boxed Instructions