You are not supposed to have a super pig, if it even exists. So, most likely it will be deleted with a chance of action taken against your account. So, I would give it a price check of 0.
If I were you, I would page a GM to ask them asap. Highly recommended. Trust me, I know a handful of collectors who got axed for being in possession of something that they should not have. Trying to sell it would be the worst thing you can do for your account.