Piture included! Antique silver 4pc tea set &tray1935-1950, Oneida Silver Smiths, steriling silver..so i was told

Yet to full restore all the whole set I still need to properly clean them. As you can see a top is missing off one of the little cups. also Inside one of the big tea pots is a crack, can that be repaired or is it work even repairing!? I was told this is a sterling silver set.