Dave,
Scott #1084, listed only as a block of 4. MNH and used value for block of 4 are the same, 70c, in the 2009 catalog. I'm still on the road, so that's the latest I can give you.
The individual used stamps would default to the Scott minimum catalog value of 20c, since the block of 4 is 70c.
The individual stamp catalog numbers are assigned by normal Scott order; so if you look at the upper left block of 4 in the sheetlet you show, the catalog numbers would be
#1084a #1084b
#1084c #1084d
It is my opinion that the Scott catalog values for very recent Pakistan stamps are underpriced, but reflective of the currently very low US demand for these stamps in the US.

k