A dressed up little boy holding a horn instrument poses for his portrait in Port Jervis, New York. I am unsure if his horn is a toy or a real musical instrument. Hopefully a musically inclined visitor to this site will leave a comment about the instrument. Note the child’s high shoes and bow tie. The photograph is a product of the Allerton studio. William H. Allerton operated his studio in Port Jervis during the 1880’s. During at least some of that time, he also ran a combined refreshment pavilion and photography studio in Dingmans Ferry, Pennsylvania.
THE CABINET CARD GALLERY 
It’s a toy horn with a buzzy kazoo sound, probably a studio prop for boys to keep their hands still.