I bought a 1BTC 2013 from Titan Mint. I peeled it when Tim replied to me, with bullshit regarding the forks.
Im looking at the coin as i type. Would this even sell at auction?
I am sure it will. You can either do a WTS thread asking for people to PM you for a price offer or an auction.
Start your price at what you think you would want to sell the coin at. Post pictures of the coin front and back by using IMGUR.com
Make sure to also post a pic with proof of ownership by placing your username and date on paper next to the coin.
Read this excellent thread by Satslife about the right way to post and sell here
https://bitcointalk.org/index.php?topic=5277761.0