Congrats on what IMHO was a great year! Many folks over here would be grateful to find that many items in 10 years while others would be grateful to find that many items in 20 to 30 years. To get the two Silver coins separated, first I would try soaking them in hot water. If that does not work, then soak them in Acetone for about 5 minutes and then see if they will separate. Acetone will not harm the coins as long as you do not leave them in it too long and the Acetone will not harm or change the toning or appearance. If you do use Acetone, make sure that once separated, you rinse the coins well in water to arrest (stop) any chemical reaction, then pat dry with a soft towel.