In the case of bilateral treaties, ratification is usually accomplished by exchanging the requisite instruments, while in the case of multilateral treaties the usual procedure is for the depositary to collect the ratifications of all states, keeping all parties informed of the situation.
Trump does indeed have hands just below average size, particularly for a man standing 6-foot-2. According to various human anatomy websites, the average-height American adult male (5-foot-10) has an average hand size (measured from the tip of the middle finger to the wrist) of 7.44 inches. Trump's measures 7.25 inches. (His shoe size, incidentally, is reportedly 12, but THR editors have so far been unable to locate a Trump footprint).
TPM edblogOpinions, Context & Ideas from the TPM Editors. A Big Shoe Just Dropped. I don't know how much attention it's received. But the appearance of the name of Felix Sater in this new article in the Times is one of the biggest shoes I've seen drop on the Trump story in some time.