细节
A Brical Adding Machine
in circular metal casing with two bone styli and fitted case; an Ever Readybattery-powered bell with remote control, on mahogany plinth containing contemporary Ever Ready batteries; and another electric bell (3)
in circular metal casing with two bone styli and fitted case; an Ever Readybattery-powered bell with remote control, on mahogany plinth containing contemporary Ever Ready batteries; and another electric bell (3)