This antique box is a souvenir from the Pan American exposition in 1901. It could be a snuff as the hinged metal box closes tightly. It measures 3-3/4'' x 3''. It appears to be some sort of white metal with possibly enameling?? The imagery is created by scratching away the finish.
There is some chipping and wear of the finish in other areas as well. It is in good condition for it's 113 years.