明末至清 紫檀嵌泰山燕子石插屏

the rectangular trilobite fossil panel set within a zitan frame, one side of the panel densely figured with buff-coloured fossilised marine arthropods resembling miniature swallows with outstretched wings, the plain reverse with an uneven pitted surface, mounted on a zitan stand reticulated with a panel of wan symbols above a cusped apron