I don't remember exactly.An anti-aircraft gun,German I believe.All the displays are under glass and it is hard to get a good picture.If you get far enough away to get the placard in the shot then you get glare from the lights.If you get to close the flash shows in the glass.That's why all the shots are from an angle. Ok I was just looking at it again.There doesn't seem to be an English placard for it.I'll ask one of the Egyptians in the office tomorrow to read the Arabic one.