Any time between June 1968 and June 1969.
Best estimates put this trumpet as being manufactured after 1980.
1999
Best estimates put this trumpet as being manufactured after 1998.
1994 - 1995
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 estimate I can give is 1977-1979
Hello Between Nov 1974 ( serial 900000) and sept 1976 ( serial 970000) Delcourt JP Belgium
Best estimates put this trumpet as being manufactured after 1984.
Best estimates put this trumpet as being manufactured after 1983.
Best estimates put this trumpet as being manufactured after 1980.
Best estimates put this trumpet as being manufactured around 1952-1953.
Best estimates put this trumpet as being manufactured around 1947-1948.
Best estimates put this trumpet as being manufactured around 1951-1952.
Best estimates put this trumpet as being manufactured around 1950-1951.
Best estimates put this trumpet as being manufactured around 1951-1952.
Best estimates put this trumpet as being manufactured around 1956-1957.
1952