This butterfly hinge has the Stanley sweetheart stamp on the back which places this hinge in the 1920s to mid-1930s. It is a steel hinge with a brass finish. We have lightly cleaned this piece.
Each wing of the hinge measures 2 inches vertically and 1 1/4 inches horizontally. The spine is loose.
This type of hinge was used on kitchen cabinets. Occasionally one may find these on Hoosier-style cabinets also.
No screws included with this one.