Leopold and Rudolf Blaschka
Leopold Blaschka (27 May 1822 – 3 July 1895) and his son Rudolf Blaschka (17 June 1857 – 1 May 1939) were glass artists from Bohemia, Czechia. They were known for their production of biological and botanical models, including glass sea creatures and Harvard University's Glass Flowers.
Source: Wikipedia — Leopold and Rudolf Blaschka (CC BY-SA 4.0)