The measurements are:

4 1/2" x 6 1/4" x 3"

This is an awesome find!  All of our Firefighting merchandise was purchased from a retired firefighter from the St Louis Missouri area.  This wonderful example of a man served around the country, most notably, at Ground Zero in New York City after the 9/11 attacks.  You'll find most of his items are in near mint condition.  He cherished his collection and stored this in a manner to protect it from time.  This ships with the original box.  There is very little wear, but a light cleaning is required.  Please review and zoom in on each image for detail.  Refer to the item description for measurements.  The color is outstanding.  The design is out of this world.  This is something any collector of firefighting memorabilia would love to own!