Celluloid Souvenir from San Bernardino, CA from the middle of the 20th century. In the shape of a key with a thermometer that is still working and it looks like it measures temperatures up to 120 degrees. I think the temperatures in San Bernardo can get pretty hot, but 120 degrees? Maybe in the sun! A nice tortoise shell look to the celluloid and a wonderful image on the button. The key measures 6" long and 1 3/4" wide. The button is 1 1/2" in diameter and there is a silk rope/ribbon attached to the top, to hang it from I suppose. In good vintage condition, ribbon is faded.