I do not why to buy them, but here is an intruduction what is:

来源: chinesebuns 于 2012-01-09 16:53:55 [] [博客] [旧帖] [给我悄悄话] 阅读数 : (64 bytes)

http://wenku.baidu.com/view/435755727fd5360cba1adbff.html

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• some ancient/ vintage wax seal sells on E-bay, here: -chinesebuns- ♀ 给 chinesebuns 发送悄悄话 chinesebuns 的博客首页 (111 bytes) () 01/09/2012 postreply 17:00:35

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