This great vintage duette is signed Coro Duette. There is also a patent on the clips which I believe is 1798867 and on the frame 1852186. These are hard to read so I may have them wrong. The dress clips can be worn attached to the frame as a brooch or separately as dress clips. The metal is a silver tone metal set with blue faux star sapphires and is in great condition (may need some polishing). The duette measures 2-3/4" x 1"
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