Mr. Belin. While you were waiting to have your testimony taken here?
Mr. Day. Yes, sir; that is what confirmed my thinking on this. The envelope now was marked.
Mr. Belin. And the shells were in the same envelope that it was marked?
Mr. Day. Yes.
Mr. Belin. Now, I am going to ask you to state if you know what Commission Exhibit 543 is?
Mr. Day. That is a hull that does not have my marking on it.
Mr. Belin. Do you know whether or not this was one of the hulls that was found at the School Book Depository Building?
Mr. Day. I think it is.
Mr. Belin. What makes you think it is?
Mr. Day. It has the initials "G. D." on it, which is George Doughty, the captain that I worked under.