Sinclair Oxford 300 (Type 2), 1975

When Gillette was looking to enter the personal electronic business they turned to Sinclair Radionics, tasking them to build a pocket calculator. The result was the Gillette GPA. It was short-lived, but Sinclair released the calculator as the Sinclair Oxford. The 100, 200 and 300 were released simultaneously, each with different functionality. The 300 retailed for £29.95.

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