Details
Adding machines:
a Locke Adder, in decoratively embossed japanned aluminium with nine bi-coloured slides, by C.E.Locke Mfg. Co. Kensett, Iowa, U.S.A. -- 10¾in. (27cm.) wide; an Otis King calculator, T9226, in chrome finish with instructions and leather pouch; a Ve-Po-Ad adding machine; and a Ken-Add, all 20th century (4)
a Locke Adder, in decoratively embossed japanned aluminium with nine bi-coloured slides, by C.E.Locke Mfg. Co. Kensett, Iowa, U.S.A. -- 10¾in. (27cm.) wide; an Otis King calculator, T9226, in chrome finish with instructions and leather pouch; a Ve-Po-Ad adding machine; and a Ken-Add, all 20th century (4)