A Colt police positive special with that serial number was made in 1964.
A Colt official police special with that serial number ws made in 1947.
1966
Your Winchester Model "1894" serial number 373931 was manufactured very late in the year 1907.
Colt Detective Special serial number 45418M is within the range 19201M - 59999M which was manufactured in 1977.
1960
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About 1951
1964 Police Positive Special & Detective Special
1938
about 1957
1967