Coin grading

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Science and technology

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What Wikipedia says

Coin grading is the process of determining the grade or condition of a coin, one of the key factors in determining its collectible value. Several grading systems have been developed. Certification services professionally grade coins for tiered fees. The grading scale ranges from 1-70.

Excerpt from the Wikipedia article “Coin grading”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Bruxton, Public domain, via Wikimedia Commons.