I'm almost certain that the whiskey decanter is one that was reproduced by Wheaton. I don't know how to tell if its an original or not. Either way that will drive the value down.
The last one is Hyalyn pottery. Its usually black, green, pink or yellow. It was made in NC and pretty common to find when I lived there. I don't think I've seen any with a pattern before. I've only seen solid colors. It has a unique look for the brand. So I found some past sales with that pattern that sold $60 some different shaped ones for ~$90. You can probably get a good deal on it because I would normally not buy the brand just because in general its not worth much. But give ebay a search of what is listed on there now and you should get a good idea of what you could price it at.
Have fun at the auction.