This teapot is a Chinese Yixing Zisha (紫砂) Teapot, traditionally known as a Fish Turning into a Dragon (鱼化龙 - Yu Hua Long) style or a related Dragon & Cloud (祥龙瑞云) thematic design.
Material: Fine Zini (紫泥) or dark purple/brown unglazed Yixing clay from Jiangsu Province, China.
Kinetic Dragon Head Lid Mechanism:
The dragon head emerging from the top lid is a clever kinetic feature.
Inside the lid cavity, the head is mounted on an internal ceramic pivot/hinge. When tilting the teapot forward to pour, gravity causes the dragon's head and tongue to extend or slide outward.
Lid Knob: Designed as stylized Auspicious Clouds (祥云).
Body Carvings: High-relief sculpted swirl motifs representing rolling sea waves and rising clouds, symbolizing transformation, power, and good fortune in Chinese mythology.
The "Fish Transforming into Dragon" design originates from the Chinese legend of the carp swimming upstream and leaping over the Dragon Gate (龙门) to become a mythical dragon. It represents perseverance, ambition, and succeeding against all odds.
Mid-to-Late 20th Century / Vintage Export Versions: Individual kinetic dragon Yixing teapots typically sell between £60 and £120 ($45–$90 USD) on sites like eBay or Etsy depending on condition and clarity of artist maker seals on the base or inner lid lid lip.
Master Signed / High-Grade Studio Pieces: Fine artisan-crafted versions can fetch significantly higher values depending on the specific potter's seal stamped on the bottom.