Description: rhodium plated base metal, rhinestones
Marked: Pin, MB (phrygian cap); 154 is scratched on; earrings, MB (phrygian cap), Pat 1649187 on clamp mechanism
Reference: Patent is for a 'Safety Back Device for Ear Ornaments', filed Oct 1926, granted to Philip Reiter of New York Nov 1927. Patent is reproduced below (scroll down). Mark, design, construction, and non-use of Sterling date this to 1938-42. US Utility patents were in force for 17 years (Brunialti, American Costume Jewelry - Art and Industry (2008) Vol 1, p 11)
Size: Pin 1.45" x 1.45"; earrings 1.1" x 1"
Price: US$295 ' - see our Sales Policies (link below) for any shipping charges
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