This key is actually a working desk thermometer! It is vintage and from France. It is a gold-tone key with a glass domed cover. The back has a gold-tone 'kickstand' where you can have the key resting on it, or you can choose to lay it flat and use it as a paperweight!
It is in excellent condition.
DIMENSIONS: 5" long by 2" wide (at widest point) and about ⅝" deep.
PLEASE MAKE NOTE OF MEASUREMENTS, AND E-MAIL OR CALL IF YOU HAVE ANY FURTHER QUESTIONS ABOUT SIZE OR CONDITION.