Hard to identify these plates, but they are heavy solid cast brass or bronze.  Great Art Deco Design, probably from the teens or 20"s. See pictures for details 7 1/2 x 2 1/2".  Price is for each, multiple available. 

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Antique door hardware Vintage Victorian

 Edwardian Art Deco handles Brass Bronze Ornate

Architectural salvage hinges Glass Crystal Porcelain  Baldwin Yale Corbin Russell & Erwin Sargent

door knobs Eastlake Mission style Arts and Crafts Rococo Neoclassical Georgian Federal

Gothic Renaissance Tudor Regency Colonial Chippendale Louis XVI door knobs Empire

Queen Anne Aesthetic Movement Beaux-Arts Nouveau Deco door knobs Mid-century

modern Retro door knobs Salvaged Restored Refurbished Authentic Reproduction

door Period Historical Original Rare Unique plates escutcheons rosettes

skeleton keys Taylor and Boggis bronze brass leaded purple crystal ornate Bennington

marble Norwalk Lockwood barrows Penn FC Linde Branford Schroeder Nashua Gilbert

Niles Rim Lock Mortice doorknob Reading