Tuğberk Can Özen

Founder, OBZENA LLC

Tuğberk Can Özen is the founder of OBZENA LLC, a Wyoming, USA company that builds AI image-recognition apps, including Coinara, the coin identification app this site links to.

The guides on Coin Identifier are written and edited with the help of AI drafting tools, working from PCGS and NGC references, auction records and mint publications. Tuğberk is not a professional numismatist or appraiser, and the price ranges on this site are estimates, not appraisals. How the content is made is explained on the How we create content page.

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Articles by Tuğberk Can Özen

3D coin toss game showing a historical coin mid-flipWorld & Ancient CoinsFlip a Coin With History: The Six Real Coins in Our Coin TossOur free coin toss lets you flip one of six real historical coins in 3D, call heads or tails and build a streak. Here is how the game works and the story and value of each coin, from an Athenian owl to a 1909-S VDB cent.Authentic antique Russian imperial silver ruble showing the tsarist double-headed eagle and Cyrillic legend in macro detailWorld & Ancient CoinsHow to Authenticate Russian Imperial Coins for New CollectorsAuthenticating Russian imperial coins means checking weight, die detail, and edge lettering against known records. New collectors should verify rubles through PCGS or Heritage auction comps.Silver Kingdom of Two Sicilies 120 grana piastra showing Ferdinand II bust and crowned Bourbon coat of armsWorld & Ancient CoinsKingdom of Two Sicilies Coins: Identification and Value GuideKingdom of Two Sicilies coins are identified by ruler, denomination, and Naples mint marks. Values run from a few dollars to thousands for rare gold.Toned Canadian silver quarter next to a bright nickel coin and a small test magnetWorld & Ancient CoinsHow to Tell if a Canadian Coin is Silver or Just PlatedThe fastest way to tell if a Canadian coin is silver is its date and a magnet test. Circulating silver coins run through 1968.Canadian 100 dollar gold commemorative coin displayed on a neutral studio surface under professional numismatic lightingWorld & Ancient Coins20 Most Valuable Canadian 100 Dollar Gold Coins for CollectorsThe most valuable Canadian $100 gold coins are the 1976 Montreal Olympics and early 22-karat commemoratives. Their value tracks gold spot, mintage, and grade.Stack of bank coin rolls and loose silver coins spread on a wooden teller counterValues & PricesHow to Find Rare Coins by Asking Your Bank Teller: Coin Hunter PSAThe fastest way to find rare coins is to ask your bank teller to order coin rolls and boxes at face value. Tellers can request half-dollar boxes, cent bricks, and dollar bags that often hide silver and error coins. This costs nothing beyond the coins' face value, so every hunt stays low risk.Authentic 1864 bronze Indian Head cent and a Civil War storecard token displayed on a neutral studio surfaceCoin IdentificationHow to Identify Civil War-Era Coins: Authentication GuideCivil War-era coins date from 1861 to 1865. Identify them by metal composition, denomination, and mint mark against PCGS references.Rare 1964 SMS Kennedy half dollar with satin finish and squared rims shown in professional studio macro photographyUS CoinsHow to Identify a 1964 SMS Kennedy Half Dollar: One of Only 16 KnownThe 1964 SMS Kennedy half dollar is a rare satin-finish special striking. Fewer than two dozen genuine examples are known to collectors today.Genuine United States Trade Dollar reverse showing eagle and berry hub detail on dark studio surfaceCoin IdentificationHow to Spot a Counterfeit Trade DollarThe fastest way to spot a counterfeit Trade Dollar is to weigh it. A genuine coin hits 27.22 grams of .900 silver. Most fakes run several grams light.Pre-1968 Canadian silver quarter showing Victoria portrait and detailed caribou reverse on a neutral studio surfaceWorld & Ancient Coins18 Canadian Silver Quarters Worth Money: Pre-1968 IdentificationThe most valuable pre-1968 Canadian silver quarter is the 1875-H, worth over $2,000 in VF-20. The 1889 and 1936 Dot follow close behind.Ancient Roman silver denarius showing a clear obverse legend with imperial titles around the emperor portraitWorld & Ancient CoinsHow to Read Roman Coin Inscriptions for BeginnersReading Roman coin inscriptions starts with the obverse legend naming the emperor. Abbreviations like IMP and COS reveal his titles and date.Weimar Republic silver five Reichsmark commemorative coin on neutral studio surface showing detailed eagle reverse and soft cabinet toningWorld & Ancient CoinsGerman Reichsmark and Pfennig Coin Collecting GuideGermany issued Reichsmark and Pfennig coins from 1924 to 1948. Mint marks reveal the maker, and silver issues hold most collector value today.
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