MATROSCHKA and MATROSCHISCHKA which are carefully handmade give the egg the look of a precious little jewel. The perfectly formed design and precision involved are considered to be a particularly challenging piece of workmanship. If used as enhancement of the existing porcelain ware MY CHINA! or as single object.
More about the SIEGER by FÜRSTENBERG brand
https://www.fuerstenberg-porzellan.com/info/deutsch/manufaktur/sieger-by-fuerstenberg/
https://www.sieger-germany.com