1.75" with celluloid disc mounted on each side of a piece of thin black fiberboard which likely had a small loop at the top to serve as a watch fob but the open loop area has snapped off. One side of this piece reads "Beautiful Hershey Park/The Ideal Picnic And Pleasure Ground." Opposite side has slightly tinted real photo without dot pattern showing at right three young women in white dresses beneath a tree while at left and looking to the camera is a boat named "Mayflower" holding one man and three women in white outfits accented by black neckties and each wears a hat. Only example we've seen and displays Mint.