平館軍太郎（1904-1956)，雅號「大美」，與立德同年(較秀仙小一歲)，同為「南部鐵瓶技術保存會」中一員。是當時16位容許製壺的釜師之一，可見其地位；而因其早逝，留下來的作品數量，自然及不上秀仙和立德、鶴齋了，所以作品就更珍貴了。
此壺不但砂鐵比例高，叩音清脆，且風格特別，與一般的平丸型不同；具體表現在蓋、把手和咀，三者的造型(弧度和造工)非常接近，形成特有的氣度。
細節的處理，嚴謹而精致的(例如壺蓋的吻合、壺身的纹飾)，可謂一絲不茍！
Tairadate Guntaro (1904–1956), who went by the artisan name "Taibi," was born in the same year as Tatsutoku and was one year younger than Shusen. He was a prominent member of the "Association for the Preservation of Nambu Iron Kettle Techniques." At the time, he was one of only 16 master kettle-makers (kamashi) authorized to craft kettles, which underscores his esteemed status. Due to his untimely passing, the number of surviving pieces he left behind is naturally far fewer than those of Shusen, Tatsutoku, or Kakusai, making his work exceptionally rare and precious.
This particular kettle not only boasts a high proportion of satetsu (iron sand), producing a clear, resonant ring when tapped, but it also features a highly distinct style that sets it apart from ordinary hiramaru (flat-round) shapes. This uniqueness is beautifully expressed in the lid, the handle, and the spout—their contours and craftsmanship mirror one another so closely that they create a uniquely majestic and harmonious presence.
The handling of every detail is rigorous and exquisite (as seen in the seamless fit of the lid and the intricate patterns on the body), reflecting a standard of absolute meticulousness.
