You're confused about that too. CE 637 is the lift. CE 639 is a photograph (slightly enlarged) of CE 637.
You've just admitted that CE 637 and Ce 639 are basically the same piece of evidence ....Which is a 3' X 5" white card that has a piece of cellophane tape stuck on it and that piece of tape is purportedly a lift of a print. This is exactly what Tom Alyea said he saw detective day create in the TSBD at about 1:45 that afternoon.
The liars would like us to believe that CE 637 ( CE 639) is Lee Oswald's palm print that Day claimed he found on the 5/8 inch diameter barrel. If the barrel is .625 inches in diameter (and it is) then the surface area that would be presented to exposure to a man's palm would be less than 5/8 inch...... or about 3/8 of an inch. but he photo shows an area of nearly an inch.
Houston we have a problem....The card can be used as a scale to find that the bayonet slot on the right hand side of the lift measures .197 inches across....or 5mm..... And the width of the bayonet slot on the foregrip of a model 91/38 carcano just happens to be ....5mm Proving that the lift was taken from the WOODEN foregrip in the area immediately to the rear of the bayonet slot.