Usually the largest part of your chest doesn't match up with the pits of the peacoat.
The peacoat will have lower armholes so 2" is really 4". So you guys are both right.
Peacoat, what u think of this one
http://img.auctiva.com/imgdata/8/5/0...32702597_o.jpg - tag
tag is from 1945 but the coat doesn't look WWII.