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Sinclair Sovereign

Size: 36 x 141 x 12 mm

Display: 8digits, red LED

Power: 2.5V (2 x hearing aid batteries)

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Named patriotically for the Queen's Silver Jubilee in 1977, the Sinclair Sovereign was an attempt to break out of the bottom end of the calculator market and recapture the top end. It was one of the better-engineed Sinclair calculators and was very well-designed - so much so, in fact, that Sinclair designer John Pemberton won a Design Council Award for it. It was available in a satin chrome finish or plated in silver or gold. A few limited edition silver Sovereigns inscribed to commemorate the Silver Jubilee were also produced. Sinclair even produced two in solid gold!

Sinclair's critical success was, however, not replicated in the marketplace, as the company was by that time on the verge of being squeezed out by LCD calculators. Profit margins became so slim that Sinclair was soon selling the Sovereign at a loss.

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Chris Owen 1994-2003