How to Check the Authenticity of a Howard Miller Clock

Howard Miller J.H. Gould and Co. III Vintage Wall Clock - Brass Pendulum, Quiet Quartz Movement, Antique Brass Finished Bezel, Decorative Timepiece for Living Room, Kitchen & Office

Howard Miller Hadley Key Wound Mantel Clock – Classic Wooden Tambour Design, Westminster Chime, Serpentine Hands, Antique Style Carved Side Scroll, Vintage Heirloom Décor, Collectible

Howard Miller Barrett Mantel Clock - Key-Wound Chime Movement with Brass Dial, Solid Wood Frame, Wooden Finish, Vintage Tabletop Clock for Fireplace, Shelf, or Desk - Classic Home & Office Decoration

Howard Miller Emmett Wall Clock II, Espresso Finish - Silver Finished Pendulum, Wenge Style Chrome Accents, Quartz Movement Soft Ticking Wall Clock for Bedroom, Modern Grandfather Clock