All sets are complete and are in original boxes and all have original COA's.  These are the 90% silver sets, meaning that Halves, Quarters, and Dimes, are 90% silver.  
United States Mint Silver Proof Sets
 
1993
1995
1996
1998
2002
2004
2006
2008
2010
2014
2017
2018
 
United States Mint 50 State Quarters Silver Proof Set
2004
2005
2006
2007
2008
2009