2+ week, 6+ day ago   (539+ words) If you have a jar, drawer or box full of old coins, it may be worth taking a closer look. A 1994 penny recently sold for about $12,000. To most people, it looked like an ordinary penny, but a small difference made…...

3+ week, 3+ day ago   (301+ words) A new deep-learning approach could make the assessment of collectible coins more accurate, detailed and objective The research covers the automated assessment of coins with different designs, denominations and dates of minting. Coin grading traditionally relies on specialists who assess…...