33' 2-Bay Offset Side Hopper - Ready to Run -- U.S. Air Force DAFX #55175 (blue, white)

This 33' twin bay hopper with rib sides is painted blue with white logos and lettering. It was built in October 1950 and runs on roller bearing trucks. The reporting mark DAFX for U.S. Air Force (USNX for Navy) signifies of this car as not intended for use on commercial trackage for interchange service.