The significance of the unsleeved fore arm upraised with bottle in hand is basically ; Who else could the person be , other than Oswald?
The only other possibility was Lovelady , since he is the only other person out there on the front steps who has categorically stated in WC testimony of having bought coke from the 2nd floor machine just before he then went out to to the front steps
Imagine if that original negative of Altgens produced a clear print that showed not only the arm with bottle more clearly, but some portion of the white solid oval shaped Dr.Pepper label on bottle in that hand?
Mr. LOVELADY - Well, we came down at 10 minutes til to wash up and get ready for it.
Mr. BALL - Did you come down the elevator?
Mr. LOVELADY - Right.
Mr. BALL - What did you do after you went down and washed up; what did you do?
Mr. LOVELADY - Well, I went over and got my lunch and went upstairs and got a coke and come on back down.
Mr. BALL - Upstairs on what floor?
Mr. LOVELADY - That's on the second floor; so, I started going to the domino room where I generally went in to set down and eat and nobody was there and I happened to look on the outside and Mr. Shelley was standing outside with Miss Sarah Stanton, I believe her name is, and I said, "Well, I'll go out there and talk with them, sit down and eat my lunch out there, set on the steps," so I went out there.
Mr. BALL - You ate your lunch on the steps?
Mr. LOVELADY - Yes, sir.
So Lovelady went down on the elevator at 11:50, he then washed his hands, and went to the second floor to get a coke, and then returned to the first floor. Let's say that he was back on the first floor at 12:00 noon, after buying his coke. He then spotted Bill Shelly on the front steps talking to Sarah Stanton and decided to join them and eat his lunch on the steps.
The Altgen's #6 photo was taken at 12:30.... Do you really believe that It took Billy Lovelady a half hour to consume one of those small bottles of Coca-Cola?? Is that being realistic??