Breguet et Fils, No 4618The 4.5 inch signed and numbered silvered dial with twin subsidiary dials - the uppermost engraved with Roman hours and Arabic ten-minute divisions with matching blued steel hands, the lowermost showing running seconds marked in 10s, set into a cylindrical weighted brass bowl with hinged winding cover and set in oval gimbals in a two-part box with twin side handles and a sliding inspection cover to the lid with inlaid brass number lozenge, the spring driven movement with freesprung bimetallic Z-type balance to a detent escapement, all mounted on a sub-plate on the backplate, 23.5cms (9ins) wide.