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Tuğberk Can Özen

Founder, OBZENA LLC
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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.

Areas covered
Coin IdentificationValues & PricesError CoinsUS CoinsWorld & Ancient Coins

Articles by Tuğberk Can Özen, page 4

Two Canadian toonies side by side showing the silver ring and gold-coloured coreWorld & Ancient CoinsHow to Spot a Counterfeit Canadian ToonieCounterfeit Canadian toonies usually give themselves away by weight, sound, mismatched metal colours or soft engraving. Compare a suspect coin with a genuine one from the same year.Close-up of proof and regular strikes, mirror-like surfaces and crisp details visibleCoin IdentificationHow to Identify a Proof Coin vs Regular StrikeProof coins are struck at least twice with polished dies on polished blanks, so they show mirror-like fields, frosted designs and sharp, square rims. Regular strikes have satin or frosty surfaces and softer rims.French franc coins from different eras laid out on a table for numismatic studyWorld & Ancient CoinsFrench Franc Coin Collecting: Identification and ValuesMost French franc coins, especially post-1960 nickel issues, are worth little. Silver and gold francs and scarce dates carry real premiums, so identify the type, date and mint mark first.Close-up of gold vs gold-plated coin with visible mint details professional numismatic photography 2026 collector reference guideCoin IdentificationHow to Tell if Your Coin is Gold or Gold-PlatedSolid gold coins are heavy for their size and not magnetic; plated coins weigh less and show base metal where the plating wears. Weight, diameter and specific gravity settle most cases.
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