NGC Introduces High-Security Hologram With Unique QR Codes

Numismatic Guaranty Company (NGC) is introducing a new high-security hologram as part of its comprehensive efforts to combat counterfeiting and create a

Holography News

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What Are Security Holograms and How Do You Verify Them?

QR codes can hide deceptive links used by identity thieves, FTC

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Holograms on Coins and Beyond - Numismatic News

Creating Custom QR Code Anti-Counterfeit Holographic Stickers for

NGC Introduces New High-Security Hologram with Unique QR Codes

Rare Coin & Currency Collecting News

1870-S $3 Gold Coin : History & Value.