A White Jade `Magpie` (Xi Qing) Pendant, Ming Dynasty (1368-1644)明 白玉雕`喜磬(庆)`将军扣The white jade plaque well-polished, the frontal carving arranged with a magpie holding a `qing` instrument to the centre, surrounded by ruyi-form clouds, the reverse with layers of petals, with reticulated rosewood stand 带镂雕花梨座, plaque 2.8 x 2.8 x 0.3 in — 7 x 7 x 0.8 cmProvenance:Mr. Loo, San Francisco Private Collection来源：旧金山卢氏私人珍藏Estimate: $2,500—3,500