VINTAGE MACK TRUCK BULLDOG HOOD ORNAMENT - SOLID - DESIGN PATENT #87931. Awesome piece of Vintage truck history!!! A vintage Mack truck bulldog hood ornament in solid chrome weighs appr 13 oz and is etched with the "Design Patent #87931"... comes with the screw to mount (as shown in picture) It could be from the 50's, as this was gifted to me by my grandfather before he passed away, but I cannot be absolutely sure. measurements are about 4.5" x 2" wide Can also be used in the vintage ashtray styled MACK bull-dog set up.