old WWII vintage US Navy officer's gray uniform tunic

Old World War Two vintage, US Navy officer's uniform tunic or jacket in slate gray. We've been told that the Navy replaced khaki uniforms with gray uniforms (as they felt that gray was a better camouflage color while at sea) for a brief period during World War Two.

The tunic for this uniform measures about 17" long on the arm (from the armpit to the sleeve cuff), 36" around the chest (under the arms), 17 1/2" across the shoulders. This tunic has heavy spotting and large areas of discoloration.