Tsubame Tsuiki Copper Sake Warmer (Chirori) by Sinkoukinzoku — Hand-Hammered 330ml in Niigata’s Coppersmith Town (¥15,400 / ≈$103 USD) [2026 Buyer’s Guide]
Tsubame tsuiki dōki (燕鎚起銅器) is the **hand-hammered copperware tradition of Tsubame**, in central Niigata Prefecture — practiced continuously…