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 Graham Bracket Mantel Clock – Key Wound Mechanical Clock with Westminster Chimes, Ornate Silver/Gold Dial, Wooden Finish, German Movement, Chime Silence Option, USA Made

Howard Miller Hampton Mantel Clock - Wooden Tabletop Analog Clock with Quartz Dual-Chime Movement, Battery-Operated, Wooden Finish, Sturdy Wood Frame - Fireplace Mantel, Bedroom, Shelf and Desk Decor

Howard Miller Statesboro Mantel Clock - Classic Wooden Analog Tabletop Timepiece with Quartz Movement, Wooden Finish, Battery Operated Desk Clock for Shelf, Living Room, Bedroom, and Fireplace Decor

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