Seljuk Dirham - Three Brothers

Hi everyone,

I haven't posted in this forum for a long time but am still a regular reader. During that time I became more interested in Islamic coins - the only problem being I don't speak or read Arabic. I have a number of the standard reference books (including Plant) but the variations in letter forms can be really hard to figure out.

I have what was described as a Three Brothers Seljuk dirham, although the date and mint was not noted by the auction house. This one seems unusual to me as the symbols and decorative elements usually found at the top of these are missing, and instead seem to be replaced by date and mint information.

I think the first word on the obverse (the right image) might be sanat followed by decade and year in diwani with sitt at the very bottom of the coin. The first two lines of the central inscription are in the standard form but I cannot understand the name of the caliph in the third line.

The top of the reverse has zuriba as the first word and then presumably the mint but I'm stuck on that as well.

I tried surfing through Zeno to see if I could find a match but no luck. Any help with figuring out the inscriptions is much appreciated!