Unknown maker - perhaps a special order piece. Definitely vintage, likely 1950's or early 1960's. Solid Sterling Silver with gold gilt. Marked sterling and also has a faint inventory number, so at one time, this was part of a high-end collection.
Pinback clasp works as originally intended. You could also loop a chain through the closed clasp and wear this as a pendant. Very large size for the period (just over 3 inches wide).
All of the rhinestones are present. This is a very special piece, and screams mid century. See pics for exact detail.Please see our other listings, and check back often as we typically list 30-50 high-end estate items each week with No Reserve! The item "VINTAGE GORGEOUS STERLING RHINESTONE SUNBURST Large BROOCH PIN Space Age Sputnik" is in sale since Tuesday, October 16, 2018. This item is in the category "Jewelry & Watches\Vintage & Antique Jewelry\Costume\Designer, Signed\Pins, Brooches"." and is located in Charleston, South Carolina. This item can be shipped to United States.