Seishi Bosatsu
Northern and Southern Dynasties, 1336 - 1392
Hase Dera in Kamakura (scanned from temple catalog)

Seishi Bosatsu - 12th Century, Chusonji Temple
 Scanned from temple catalog

Seishi (L) and Kannon (R) Bosatsu
Standing in Tribankha Pose
Hands outstretched in Varada and Vitarka Mudras
 Courtesy http://www.shakris.com (Arts of Japan section)

Hakuhou Era 663 - 709 AD
Treasure of Horyu-ji
www.horyuji.or.jp

資料來源：

Seishi (or Dai-Seishi) Bosatsu
http://www.onmarkproductions.com/html/seishi.shtml