Vintage 1930s Rhinestone Studded Flower Spiral Pinwheel Pinback Brooch

Vintage 1930s Antique Silver Toned Clear Blue Rhinestone Studded Flower Spiral Pinwheel Shaped Pinback Button Pin Brooch Art Deco No print found on item when examined. Please note the brooch has a fair amount of bending in metal, as it’s thin & malleable, and there’s a turquoise spot of tarnishing/oxidation on metal, as indicated in photos. I assume such tarnishing could be removed easily with the right solvent. Measures roughly 2.5" x 1.5". Sold as pictured.