Reason slot meter, c.1920.
1918-1922
1918-1922
1927
1935
circa 1930
1918
1936
1920-1929
1937
1937
1932
1920
1930
1924
1925
1928
1927
1923
1924
1931
circa 1920
1930
1936
1931
1934
1928
1935
1925
1927
1926
1935
1934
1922
1920-1925
circa 1927
circa 1930
1931
1922-1923
1922-1923
1933
1922-1923
1922-1923
1928
1920-1935
1935
1921-1930
1920-1930
1935
1926
1921
1926