The fire resulted in loss of all the company records, including those which would make it possible to determine the year of manufacture from the serial number. They made a line called Monopole Conservatoire of higher quality instruments, but their marketing proved ineffective and factories were sold off and in 1969 the main factory was badly damaged by fire, destroying the archives. Starting in the 60 s and during the next 20 years, Couesnon tried to expand its share in markets other than marching bands.
1Īt the end of World War II, the music business started to change, but Couesnon continued to deal primarily with the special needs and instruments of brass and military bands. They made many horns which were imported into the United States, including many that were sold under the names of music stores and other private labels. But, by 1927 they were down to a workforce of 200.ĭuring the 1930s they began catering to marching brass bands, and gradually became almost the only supplier of marching brass instruments in France.
