The Boston Musical Instrument Manufactory was formed in 1869 by some notable early American makers, including the 3 Graves brothers and Elbridge Wright.   In about 1902 the enterprise moved, and changed the name to the Boston Musical Instrument Company. The firm was purchased by Cundy Bettony in 1914, and continued operation until at least 1928.

This is a full double horn, F and Bb, nickel silver plated brass, in one of the earliest configurations.  The horn was built in the form of a "Schmidt wrap" (after C. F. Schmidt, a German horn maker) which normally employs a piston valve for the switch between F and Bb.  The Schmidt wrap horns are known for their consistent feel and sound between sides of the horn.  This horn uses a double depth rotary valve in place of the piston, but uses the same tubing placement and wrap.