Costume brooch with dangling coin-style charms

This item is a circular, tiered brooch featuring a complex, openwork base of gold-toned or silver-toned metal. The construction is stylistically consistent with mid-20th-century costume jewelry, particularly 'atomic' or 'sputnik' designs from the 1950s or 1960s. The piece is central to a polished metallic bead and is adorned with various small, dangling oval and circular charms that appear to mimic ancient or religious coins. These charms are attached via fine jump rings to a wire-frame structure. The metal surface shows signs of aged patina and minor wear, with some oxidation visible between the wired components. No maker's marks or hallmarks are visible in the image to confirm a specific designer or metal purity; thus, it is treated as costume jewelry. The craftsmanship appears to be hand-assembled wired work, creating a textured, three-dimensional effect. Measurement is approximate based on visual scale against denim fabric, likely measuring between 1.5 to 2 inches in diameter.

I have examined the digital image of the tiered, coin-motif costume brooch. Based on what I can see, the piece reflects the 'Artisan' or 'Sputnik' styles prolific in mid-century costume jewelry, approximately circa 1955-1965. The hand-wired construction and use of coin-style charms suggest a production by a firm such as Hattie Carnegie, Florenza, or West Germany, though no stamp is visible to support a specific attribution. My value estimate is based on the item as an unattributed piece of high-quality vintage costume jewelry in good, aged condition. I can't verify the metal content from a photo, though the visible oxidation and patina are consistent with gold-plated base metal or brass rather than solid gold; a physical inspection or acid test would be required to rule out precious metal content. The market for mid-century 'novelty' jewelry remains steady, with demand driven by collectors of 'atomic' era aesthetics. Because I cannot confirm a designer without a hallmark, this estimate reflects an 'in the style of' valuation. If the piece were found to bear a mark from a highly collectible maker like Hattie Carnegie upon physical inspection, the value could increase toward the $125-$200 range. Conversely, if the jump rings or charms are found to be modern replacements during an in-person examination, the value would likely drop below $20. To confirm authenticity and refine this estimate, I recommend an in-hand inspection to check for hidden marks beneath the central bead and a weight-based assessment to better understand the substrate metal.