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 Jennison Wall Clock – Key-Wound Mechanical Chiming Clock with Lyre Pendulum, Triple Chime Movement Westminster, St. Michael & Whittington, Beveled Glass Door, Brass Accents

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