Rare 1970s Handmade Chinese Duan Ni Yixing Zisha Clay Teacups w/ Crackle Glaze For Sale

A breathtaking set of three authentic, handmade vintage Chinese Duan Ni Yixing Zisha clay teacups.These very rare and highly collectible cups are crafted from authentic Duan Ni (段泥) clay, recognizable by its beautiful, warm golden-beige hue. The unglazed exterior features hand-applied 3D plum blossom branches and calligraphy, while the interiors are finished with a gorgeous, delicate white Ge-yao style crackle glaze.Duan Ni is incredibly highly prized by serious tea practitioners for its exceptional porosity and heat retention. Its unique sandy structure is perfect for mellowing out the harsh astringency of strong teas like aged Pu-erh or heavy roasted Oolongs. With regular use, this specific clay absorbs the tea\'s natural oils to develop a rich, velvet-like patina (highly desired by collectors as Lao Duan).Most importantly, each cup is stamped on the bottom with the historic \"Zhongguo Yixing\" (China Yixing) seal. This identifies them as authentic State-Run Factory Period (Factory 1) pieces from the 1970s, crafted using pure, unblended Duan Ni clay mined directly from the now heavily restricted Huanglong Mountain deposits.Authentic Factory 1 Duan Ni pieces in this pristine condition have become increasingly rare and hold tremendous value!Essential Care Tips for Pure Zisha WareNever use soap: Wash cups exclusively with hot water. Detergent will seep into the porous clay and ruin future infusions.Air dry completely: Leave the lid off after rinsing to ensure moisture does not get trapped, preventing mold.Dedicate your cup: Choose one type of tea (e.g., Puerh, Black, or Oolong) for the cup\'s lifespan to properly build its unique flavor profile and glossy patina.Condition: Excellent condition. No chips or cracks in the clay.