Please see last photo for measurement. Please note: This is a costume jewelry piece made with using non-precious metals and materials. Vintage Earrings Clip On Modernist Space Age Futurist 925 Poland. Based on research, this exact pattern can be found from the Polish artist, M. However, these are not signed and cant find much on that artist.
These are normal and expected aspects of vintage items and do not affect their quality or authenticity.