1980-1981 ML refers to Medium Large bore size .460
Best estimates put this trumpet as being manufactured after 1984.
Best estimates put this trumpet as being manufactured after 1983.
1952
1894
Best estimates put this trumpet as being manufactured around 1952-1953.
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 1947-1948.
Best estimates put this trumpet as being manufactured around 1956-1957.
Around 1963.
Most likely 1970.