Some things I found in my closet from past seasons.
Jil Sander coral unconstructed cotton jacket, 2 button, unvented, 48. I think this is S/S 2004 or possibly 2003. $140 shipped CONUS
Length (back, excluding collar): 28.25"
Sleeves (from top of shoulder): 26.25" (sleeve buttons cut)
There are small dark marks in the back (pictured) and under armpit (not seen when worn, similar to those on the back).