It depends on how is the coin, you can create a thread on the collection board of this forum, there is a lot of people placing bids in order to get some coins.

And a lot of people are winning those contest with a very low price, if you are going to publish one, you need to post some proofs, because i see that you are new in here, so nobody is going to trust in you.

And is it of Gold / Silver? if it has been bulit with one of those metals then i think that you are going to sell it fast.

Good luck.