Imperial Decree Granting Ecclesiastical Rank of Hôin Daikashô and Posthumous Name Chishô Daishi to Enchin...
from here. The explanation:
It is recorded that this imperial letter, issued by Emperor Daigo (885-930, r. 897-930), was composed by Fujiwara Hirofumi and transcribed by the renown calligrapher Ono no Michikaze (894-966). The voluminous and substantial characters, on pale blue paper with faintly drawn guidelines, reveal a strongly spirited hand. Michikaze, to whom is attributed the creation of Japanese-style calligraphy, was at the time, thirty-four years old and working as a minor scribe in the Ministry of Central Affairs (J. Nakatsukasashô) writing imperial letters and conferrals of rank. The letter has been marked in thirteen places on the front and two places on the back with a square red stamp reading "Emperor's Seal" (J. tennô gyoji).
Enchin (814-891) was the fifth abbot of Enryaku-ji Temple of the Tendai sect on Mt. Hiei and revitalized Onjô-ji Temple (also known as Mii-dera). He is considered to be the founder of the Jimon ("Temple School") branch of the Tendai sect.