The listing, *Free Shipping* Collectible Stamps (Tiered Auction) has ended.
The items being bid on are six stamps; a mountain range, hot air balloons, raspberries, gardening/horticulture, 1975 Apollo Soyuz, and Mariner 10. This is a tiered auction, meaning if the auction reaches a certain number of credits then how much you get changes. For this auction, you can pick which stamp you get for each. Here is how the tiers are for this auction: