At first glance, it looks like Gujo Tsumugi. It has a slightly rough, coarsely woven texture. There's a remnant piece that says "Tsu no Kuniya Genuine Hand-Woven Silk Tsumugi" (本真綿 手織紬). The reason it's "as is" is because the lining has significant yellowing. Length: 150.5 cm, Inside hem: 2 cm Sleeve length: 63 cm Sleeve length: 49.5 cm Front width: 23 cm Back width: 30.3 cm Overlap: 15.5 cm Bat-wing collar The outer fabric is a beautiful item with basting threads still attached, but the lining has severe yellowing. Please consider this item if you understand the condition.