Mr. Eisenberg. The bolt face?
Mr. Cunningham. Yes; the bolt face, and it is just as distinctive as these striae on my photographs of the breech-face marks of the revolver.
Mr. Eisenberg. By "striae" you mean lines?
Mr. Cunningham. Yes; just lines. But it is more difficult to see, due to the character of these marks—even though one type of mark is just as characteristic as the other type.
Mr. Eisenberg. As I understand your testimony, to the trained observer the photograph shown—the cartridges shown in the photographs on 565 can be as easily identified with each other as the cartridges shown on, let's say, 598?
Mr. Cunningham. That is correct.
Mr. Eisenberg. But to the layman it is easier to see the similarities on 598, with its striae, than 565 with its grosser imperfections?
Mr. Cunningham. Yes, sir; due to the type of marks on each of the cartridge cases, one is easier for the layman to see.
The next photograph is Commission document No. 599. On the left of the hairline is our number C-48, the cartridge case. On the right is the test cartridge case from Oswald's revolver.
Now, here you asked about what happens—somebody asked what happens on the other side. Here you have the other side. In this particular cartridge case——