Oct 31, 2025 | Coin Collecting, Coin Shows, Coins, Uncategorized
Professional coin grading has become one of the most trusted ways to verify authenticity and preserve the value of collectible coins. Grading companies such as PCGS and NGC give coins an official numerical grade, seal them in protective holders, and provide...
Oct 15, 2025 | Coin Collecting, Coin Shows, Coins, Currency, Gold Coins, Precious Metals, Silver Coins, Type Coins, Uncategorized, US Coins, World Coins
It is easy to assume that the value of a coin rises and falls only with the price of gold or silver. After all, bullion markets are constantly in the news and coins are often made of the same metals. The truth, however, is far more complicated. While the precious...
Oct 1, 2025 | Coin Collecting, Coin Shows, Coins, Online Auctions, Precious Metals, Silver Coins, Type Coins, Uncategorized, US Coins, World Coins
Collectors often think of coins as permanent, solid pieces of history. But even metal has vulnerabilities. Over time, air, moisture, temperature, and human handling can quietly eat away at the value of a coin collection. Protecting your coins from environmental damage...
Sep 18, 2025 | Coin Collecting, Coin Shows, Coins, Online Auctions, Type Coins, Uncategorized, US Coins, World Coins
For anyone who collects coins, there eventually comes a time to sell. Some collectors decide to part with a single rare piece, while others look to downsize or handle an inherited collection. At that point, the big question is how to sell. Should you pursue a private...
Sep 1, 2025 | Coin Collecting, Coin Shows, Coins, Online Auctions, Uncategorized, US Coins
One of the most exciting parts of coin collecting is discovering that a small, ordinary-looking coin in your possession is a key date—one that’s rare, historically significant, or especially valuable to collectors. These key dates serve as milestones within a series...
Aug 21, 2025 | Stamp Auctions, Stamp Collecting, Stamps, Uncategorized
Stamp collecting might seem like a quiet hobby to the outside world, but any seasoned collector will tell you that it’s full of excitement. For many, the thrill lies in the hunt for that elusive stamp: the one that’s hard to find, steeped in history, and perhaps even...
Aug 4, 2025 | Coin Collecting, Coin Shows, Coins, Stamp Auctions, Stamp Collecting, Stamps, Uncategorized, US Coins, World Coins
When you’re dealing with something as personal and potentially valuable as a coin or stamp collection, getting an accurate and trustworthy appraisal is essential. Whether you’re settling an estate, planning a donation, or just want to know what your collection is...
Jul 21, 2025 | Coin Collecting, Coin Shows, Coins, Currency, Stamp Auctions, Stamp Collecting, Stamps, Uncategorized, US Coins, World Coins
If you’ve ever sorted through a box of old coins or flipped through a family stamp album, chances are you’ve wondered: Is this worth anything? It’s a natural question—and one we hear almost daily at Centennial Auctions. Coins and stamps have a long history of being...
Jul 7, 2025 | Coin Collecting, Coin Shows, Coins, Online Auctions, Uncategorized, US Coins, World Coins
If you’ve got a coin or stamp collection, you’re thinking about selling, one of the first questions you’re probably asking yourself is: “When should I sell it?” It’s a fair question—and an important one. The truth is timing really can affect how much you make at...
Jun 12, 2025 | Stamp Auctions, Stamp Collecting, Stamps, Uncategorized
If you’ve ever picked up a stamp and wondered if it’s worth something, your first thought might be, “Is it rare?” That’s a fair question—and rarity certainly plays a role in a stamp’s value. But here’s the truth we’ve seen again and again at Centennial Auctions:...
