
Amplion loud speaker with wooden horn, 1925
1925
1925
1989-1999
1780-1800
1970-1980
1934
1961
1850-1900
1850-1900
1938-1950
1984
1970-1978
1950-1980
1850-1900
1939
Unknown
Unknown
Unknown
Unknown
Unknown
1931-09-28
1964
1780-1800
1939
1990-1995
circa 1967
1972
1985
1964
1950-1959
1950-1959
1950-1959
1950-1959
1950-1959
1950-1959
1950-1959
1950-1959
1950-1959
1960-1975
1850-1900
1935-1965
1937
1975-1985
1980
1920-1950
1939
1940-1965
1960-1975
1950-1970