This is a vintage metal key chain proudly made in the United States by Highland Glen Manufacturing Incorporated of Buffalo, NY.  This square keychain/key ring was produced under licensing and features a red, white and blue Chevy "The Heartbeat of America" design.  The keychain measures approximately 3 1/4 inches long with the ring (about 2 inches with just the fob piece) and is about 1 1/2 inches long.  This keychain comes as photographed.  It is new in it's original packaging.  Packaging does show signs of surface wear consistent with years of storage and display.  I do not know what the back side of the keychain looks like. I am thinking it is just a simple solid royal blue color.  Please review and enlarge all photos for additional details, views and measurements.  If I had to date this, I would say it was from the 1980's as that is when Chevrolet used "THE Heartbeat of America" advertising campaign.  Shipped via USPS Ground Advantage.