This Original Nichiren Mandala Gohonzon is housed at Kyoto [京都] Chomyoji [頂妙寺]. It is dated July 5th 1278.
It has two nicknames. I lack the experience and knowledge to translate these, but here is a shot:
若宮 [Wakamiya?] 本尊 Honzon
竹内[bamboo hut?] 本尊 Honzon
The conferral [授与; Juyo] is to 沙門 Shamon 日 Nichi 門 Mon.
Shamon is likely a transliteration of the Indic Shramana, which means something like a wandering monk.
I am not sure how to read the name -- Nichijo, Nitto, Nikado, Nichimo, Nimon, Nichimon, are all possible. The name literally means "Sun Gate." see