Three lacquered brass telegraph wheels, the keys engraved A-Z, geared mechanism, on mahogany plinth bases, the largest 9½in (24.2cm) long, each stamped KCL, (one dated 1839 with hand inscribed label) (3)

細節
Three lacquered brass telegraph wheels, the keys engraved A-Z, geared mechanism, on mahogany plinth bases, the largest 9½in (24.2cm) long, each stamped KCL, (one dated 1839 with hand inscribed label) (3)