If that index card was exactly 3" x 5" then we can measure the dimensions of the print and scale it precisely with Oswald's inked palm print. The focus should be on LHO's palm swirl:
This GIF is not good enough to establish a match. We need to work with the best imagery available and we need to get the scale and orientation exactly right (which is not the case here). I doubt a match can be established even if there is one.
Less to work with than Malcolm Wallace's print found on a box on the 6th floor. There is obviously a heavy bias here to link Oswald to the MC, since he posed with the rifle in his backyard, took a pot shot at Walker with it (missed due to the wonky scope), disassembled it and placed it into a paper bag (with wonky scope), smuggled it into the TSBD, reassembled it with a dime as a screwdriver, hid the MC on the 6th floor, retrieved it later and took at least 3 shots at the POTUS, then ditched the rifle and fled the scene without leaving a single identifiable print on the rifle. The lack of Oswald's prints on everything is the smoking gun here. The DPD's total disregard for the fingerprint evidence is another smoking gun. The DPD knew there were no prints to compromise so they bare-handled everything.
Where is the analysis that demonstrates a match to Oswald palm print?