A ROCK CRYSTAL 'MOUNTAIN' BRUSHREST19th century The transparent stone expertly carved with six peaks resembling a mountainous landscape with layers of craggy rock. 14.4cm (5 1/2in) long. Please note this Lot is to be sold at No Reserve. 本拍品不設底價 清十九世紀 水晶山形筆擱 Provenance : Jan van Beers Oriental Art, London, 11 October 2003 來源 ：Jan van Beers Oriental Art，倫敦，2003年10月11日 Mountain-peak shaped brushrests made of rock crystal were used from at least as early as the Southern Song dynasty, as exemplified in an example, dated to 1274, excavated from the tomb of Shi Shengzu, in the Quzhou City Museum, Zhejiang, illustrated in Dynastic Renaissance: Art and Culture of the Southern Song , National Palace Museum, Taipei, 2010, p.221, no.III-89. pare with a related rock crystal 'mountain' brushrest, Qing dynasty, in the National Palace Museum, Taipei, illustrated in A Garland of Treasures: Masterpieces of Precious Crafts in the Museum Collection , Taipei, 2014, p.158.