Let's have a look at the entire statement that Sebastian Latona made to the Warren Commission (at 4 H 24).
Emphasis added by DVP:
SEBASTIAN F. LATONA -- "We had no personal knowledge of any palmprint having been developed on the rifle. The only prints that we knew of were the fragmentary prints which I previously pointed out had been indicated by the cellophane on the trigger guard. There was no indication on this rifle as to the existence of any other prints. This print which indicates it came from the underside of the gun barrel, evidently the lifting had been so complete that there was nothing left to show any marking on the gun itself as to the existence of such even an attempt on the part of anyone else to process the rifle."
"We had no personal knowledge of any palmprint having been developed on the rifle.Which basically confirms that Day didn't tell Drain (or anybody else at the FBI) about the palmprint on 11/22/63.
There was no indication on this rifle as to the existence of any other prints Which is Latona's personal observation and thus carries evidentiary weight
This print which indicates it came from the underside of the gun barrel, evidently the lifting had been so complete ." Which is nothing more than
an assumption on Latona's part, after he had been informed about Day's claim. There may just as well have been no print to begin with.
that there was nothing left to show any marking on the gun itself as to the existence of such even an attempt on the part of anyone else to process the rifle." Which is in clear contradiction with what Day testified;
Mr. BELIN. When you lift a print is it then harder to make a photograph of that print after it is lifted or doesn't it make any difference?
Mr. DAY. It depends. If it is a fresh print, and by fresh I mean hadn't been there very long and dried, practically all the print will come off and there will be nothing left. If it is an old print, that is pretty well dried, many times you can still see it after the lift.
In this case I could still see traces of print on that barrel.