Corvidae Antique has dated this piece to the 1930s.
We have no way to confirm this but the metal is not silver and the brooch settings (note the beautiful detailing) are very similar to other stamped Platinon jewellery we have seen.
In excellent vintage condition with secure safety pin clasp.
Size: 5.3 x 5.3cm.
Weight: 10.6g.
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Corvidae Antique has dated this piece to the 1930s.
Hand picked jewellery from a friendly family business
You can view the stock and full dealer information on the Corvidae Antique Profile Page