清乾隆 白玉雕御题诗梅瓦子.An Imperial Chinese jade ruyi head plaque dating from the 18th century. The quatrefoil plaque was originally the head of a ruyi wand, and is carved with a flowering tree and an inscription. Dimensions are: 3 inches tall X 3 1/2 inches wide, 7.6 cm X 8.9 cm. All measurements are approximate. High resolution images can be found here. Condition: It is in good condition. Provenance: From the estate of Mr. Ng of San Francisco, California.來源：來自加州舊金山Ng先生私人收藏。