Reason slot meter, c.1920.
1918-1922
1918-1922
1943
1920-1940
1921
1926
1945
1927
1938
1938
1938
1935
1938
circa 1930
1940
1918
1920
1940
1936
1920-1929
1929-1935
1937
1937
1938
1938
1932
1919
circa 1938
1920
1930
1945
1924
1925
1928
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1923
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1921-1926
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1922-1923
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1934
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1936