Hello, Got this bomb diagram thing from a yard sale last week. Can someone help me identify what this is? I know the Mark 3 was one of the atomic bombs dropped in WWII. The name plates for the first and the third mini diagram fell off and I don't know what they are supposed to be. I am hoping someone on this site can help me name the other 2 bombs. I am wondering though because the mark III didn't look like it does in this picture. Help?