Utamaro Ukiyo-e Beauty Painting Men's Nagajuban (Under Kimono) for Men, for Kimono, Women's Painting, Blue, Rare

This is a nagajuban (under-kimono) for men from the Showa era.
There is a painting of a beautiful woman on the back.
Fujin Jinso Hin (Beautiful Woman's Physiognomy)
Sokan Utamaro Koka (Painted by Sokan Utamaro)

Exterior: There are some stains in places. The yellow stains are not well captured by the camera but are not very noticeable.
The gray areas in images 3 and 4 are due to lighting, not stains.

Interior: No noticeable issues.

The material and pattern are not known in detail.
Size:
Total Length (shoulder to hem): Approx. 132cm
Sleeve Width (center back to cuff): Approx. 48cm
Sleeve Length: Approx. 68.5cm
Front Width: Approx. 26cm
Back Width: Approx. 30cm

Regarding the painting of the beautiful woman, the pattern is slightly misaligned due to the way the seams are sewn, bringing the left and right fabric pieces together in the center.

Overall, this is a clean item, but as it is an old item, please only purchase if you understand and accept the potential for deterioration and the condition of the painting.

Thank you.