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