Although appearing much like a riveted medium tank M3, this is an M31B2 recovery vehicle. The dummy 75mm gun barrel is mounted on an access door, and the face of the turret would normally be occupied by the crane boom. The circular weld marks on the front hull show where pegs for stowing extra road wheels had been attached. This tank has both of the hull machine gun ports, but in practice the inboard hole would be covered by a grouser stowage box. The vehicle lacks the characteristic M3 machine gun cupola, and appears to be wearing T49 tracks.