It’s time to catch up on the week that was in numismatic insights and news.

Coin World is looking back at its five most-read stories of the week, according to reader metrics.

Click the links to read the stories. Here they are, in reverse order:

5. Some coins should be off-limits to collectors: While Coin World rarely takes a stand against collecting a particular series of coins, this is one time we’ll abandon that principle.

4. China modifies weights for Panda bullion coins beginning in 2016: After a long wait, China’s annual Panda gold and silver bullion coins have arrived in the United States of America. And, their weight is telling.

3. Louis Golino: Collectors likely to welcome changes from new silver provisions: While the language is rather open-ended, in practice the new provisions signed into law by President Obama are likely to mean that these silver coins will in the future be made of 99.9% pure silver with no alloys.

2. Colombian president announces billion dollar San José shipwreck find: An announcement of a newly found shipwreck in Colombian coastal waters — if true — could have a tremendous effect on the world of numismatics, shipwreck exploration and archaeology. 

1. Dime-struck-on-nail, wrong planchet cents among Heritage FUN sale highlights: The auction lot description: "This zinc-coated sixpenny nail found its way into the coinage production line during the minting of Roosevelt dimes, and apparently escaped through normal distribution channels."

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