We have 4 Hinges Step back style Vintage salvage items.  They measure about 2 1/2" on the flat edge side where the 2 screws are at the top and bottom x about 1 3/4" in W across the full hinge center.  The step on the hinge is about 1/4".  There is some rust peaking through on all of them with more extensive rust on 1 as shown.  They are a silver tone metal