This is a used deck that is missing the list of constellations but all 22 cards are here. The cards appear to be in the eat condition, maybe only used a few times based on the cards and the box conditions. While the box looks used, the cards look great to me. 
This is a used set but new, they are upwards of $70 bucks! Used are upwards of 30 with a sheet that lists the constellations. If you are trying to drill yourself about constellation info, this is the perfect deck for you, even with that sheet missing. Can you make your own list or find it on the internet? Is one list worth $55 bucks?