
McVitie Weston valve collection, Ediswan valve, type S.G.610
1928
1928
1929
1924
1929
1925
circa 1926
circa 3000 BCE
3000 BCE
circa 3000 BCE
circa 3000 BCE
circa 3000 BCE
circa 3000 BCE
1920
1931-2
September 1929
1928
1927
1928
1928
circa 3000 BCE
circa 3000 BCE
circa 1920
1920
1929
1926
1925
1934-05
1934-05
1925
1929
1922-1927
circa 1920
circa 1920
1929
1962-07
1968-04
1938-11
1938-11
1938-11
1920-1925
1940-05
1940-06
1941-04
1943-12
1935-01
1939-02
1951-06
1945-11
1947-04
1962-10