Thaty's a cool picture. I really have no background to authenticate such a signature...but if it's real...I'm envious. The quote at the end (god's blessing) is the same as in another example seen in Mark Dermul's private collection here: http://www.jedimaster.be/
Is it dated? And is it signed in gold? If it's signed with a gold paint pen that raises a red flag with me. Most interesting.