 The Sovereign , released in 1976 , represented an attempt to move <unk> in an increasingly saturated market . In December 1976 , the chrome plated version of the Sovereign cost GB £ 30 and the gold @-@ plated version GB £ 60 , including <unk> , but profit margins on the Sovereign were so small that Sinclair ended up selling the Sovereign at a loss , and it was not a commercial success . The Sovereign was made in England , like every other Sinclair calculator except the President . 
