OLD COPPER TETSUBIN, With a square-shaped form and lid and openwork knob

This is a square-shaped antique cast iron teapot, originating from the realm of sencha tea. The openwork knob and lid are adorned with a beautifully aged patina, showcasing the exquisite rust that has developed over time. The handle retains traces of silver inlay, adding to its charm.
In excellent condition, this well-preserved tetsubin exhibits no signs of leakage.

This piece is ideally suited for collectors who appreciate the nuances of handling antique iron teapots.