One Vintage Amerock Dull Bronze Knob Back Plate 3-3/8" Diameter Concave E502-10 in original package.  Package as seen has been around for awhile.  Face of back plate still in nice shape, back side shows damage from being stored for extended period in damp location.  Sold as found.  If pictures are not enough email with request for what you need and I'll get it to you as soon as I can.

A-10