The proof 1986 (1st year) usually have a higher premium as well as 1988. 1988 was the lowest quantity minted and getting harder to find.I have a ton of stuff I'd like to sell off, but they are the silver eagle proofs. Set from 86-18, and then I have a bunch of the 2,3, and the 5 coin sets from 2012 and 2013 I believe.
I have 8 of the proof 1988 in the gift box with a COA.
If I sold those I would most likely list on an auction site