Model of Robert Duncan's screw propeller, with stern frame and rudder, as fitted to the Egyptian government yacht 'Sareea
1886-1887
1886-1887
1909-1919
1956-09
1956-09
1888-1901
1875-1877
1861
1888-1901
1896-1901
1956-09
1956-09
1894
1911
1911
1878
1911
1970-08
1956-09
1920-1921
1891-1896
1970-08
1970-08
1970-08
1930