The World's Most Valuable Coin Sells at Auction for $18.9 Million, Smart News

Three collectibles, including a 1993 gold "Double Eagle" and the world’s rarest stamp, fetched more than $30 million at Sotheby’s

The Coin Analyst: Comparing Today's Booming Coin Market With the 1980s

Over a Dozen Times, NGC-certified Coins Topped $1 Million in 2021

A medal bought on for $74 could be worth more

Coins of Kings: The Top 2 Rare Finds Worth a Fortune

grading Coin Collectors Blog

Double Eagle gold coin previously owned by shoe designer Stuart Weitzman sells for $18.9million

Coins & Treasure Shipwreck Auction Held April 29

What is the best coin in the world? - Quora

What is the best coin in the world? - Quora