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1952
1894
Around 1963.
Most likely 1970.
Best estimates put this trumpet as being manufactured after 1984.
Between 1957 and 1958.
Serial numbers 68901-74500 are made in 1957
Best estimates put this trumpet as being manufactured after 1983.
1915
Selmer's website has a comprehensive list of years versus serial numbers. You can check it out yourself at the link below this box. But your's falls between 1947 and 48
Best estimates put this trumpet as being manufactured around 1952-1953.
Best estimates put this trumpet as being manufactured around 1951-1952.