YiXing Zisha Clay Teapot by Wang BaoGen

Description

宝根製金鼎商标线云壶, made in the Republic period.  This is one of the two signature teapot types made by this author.  The craftsmanship of this piece is exceptional.  The bottom mark
金鼎商标
is the most famous mark for Yixing Zisha teapots.
This famous clay "Republic Era Green" were made by adding small amount Cobalt mineral.
Please see this
Introduction to Yixing Zisha Teapot
at chineseantique.org