Modernist Glass German Rosenthal Vase and Swedish Kosta Boda Bowl. The vase is a clear block with a frosted bottle shape encased inside, marked on the bottom "studio-line." The bowl is square with angled and curved sided, signed on the underside S. Persson. 

Largest Size: 3 x 8 1/2 x 3 in. 

Rosenthal GmbH, a German manufacturer of porcelain products, was founded in 1879 in Selb, Bavaria by Philipp Rosenthal. Through a series of acquisitions and mergers, the company grew to become one of the largest porcelain companies in the region by the 1920s. Following the rise of the Nazi party and Philipp Rosenthal's death in 1937, the company underwent "Aryanization," though the internationally recognized Rosenthal name was permitted to remain due to its global market income. The company was revived in 1951 by Rosenthal's grandchildren, who expanded into glass, designer furniture, and household goods, including a successful collaboration with Versace. In 1997, it was acquired by the Waterford Wedgwood Group, and subsequently by the Italian manufacturer Sambonet Paderno Industrie in 2009. The Rosenthal Archive, comprising 15,000 exhibits and designs from artists like Salvador Dalí and Andy Warhol, is now on permanent exhibition at the State Museum of Porcelain. 

Kosta Boda, a renowned Swedish manufacturer of art glass and tableware, was founded as Kosta Glasbruk in 1742 by two army officers, Anders Koskull and Georg Bogislaus Staël von Holstein, making the company name a portmanteau of their own. Early production focused on essentials like window glass, chandeliers, and drinking vessels, but the factory soon embraced new trends and technical developments, such as producing pressed glass in the 1880s and making a pivotal move in 1898 by hiring Gunnar Gunnarsson Wennerberg as its first in-house artist, beginning a long tradition of collaborating with well-known artists and designers like Anna Ehrner, Monica Backstrom, and Bertil Vallien. Mergers with Boda Glasbruk in 1976 and Orrefors in 1985 consolidated its position, and the company is now part of the multinational New Wave Group AB, with their works in permanent collections in major museums worldwide including the Swedish National Museum, the Victoria and Albert Museum in London, and the Museum of Modern Art in New York.

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