Prerogative Court indices abbreviation

[pkincaid]

Under the number column what would the attached part be.

It is part of this image:

http://census.nationalarchives.ie/reels/dw/IRE_DIOC_007246592_00152.pdf

I assume they are document type abbreviations with W being Will; P being Probate; I being Inventory; etc.  Mind is blank for this one.

[Old Bristolian]

Could it be Inventory under £150 ?

Steve

[pkincaid]

Thanks for the suggestion Steve.  The 150 is the page or item number.  You can tell that from looking at the whole page.  It does look like und with two contraction dots.