Mess Hall Trays Cafeteria School Lunch Divided Stackable Trays Plates

These were given to us. I think they were from a military surplus or restaurant supply. They were in an original box with a number of others, and appear new, even though they have a few marks on bottom from rubbing against another plate. A hard resin type material. Pretty sturdy. What you would see in a cafeteria or restaurant. They look tan in picture, but it is more of a muted mustard yellow color.