拍品專文
Thomas Porzer was a gold and silversmith with premises on the Mollardgasse from 1889-1899. He exhibited at the 1893 Columbian Exposition in 1893 as well as the Expositions in Paris in 1880 and Edinburgh 1890. The ingenious winding mechanism was invented by L. Holuska of Vienna who filed a patent for it in 1885. Related examples are illustrated in C. Dike, Cane Curiosa, Geneva, 1983, p.87.