Thanks for the research everyone! It's good to know where this tops out. 1352 pp? Not bad.
For the record, this item was released for EQ's 13th Anniversay, hence all the 13s: the dials go to 13, 1.3 sec casting time, 130 min. recast delay, 130 SC.
It is back on sale in the Marketplace for March 2014.
Also, at level 55, the multiplier is 5. For a single 13 on the dial, you get 13cp x 5.
Edited, Mar 1st 2014 1:58pm by Oxgoad