Scientists were able to read a sealed letter written more than 300 years ago Video
![Scientists were able to read a sealed letter written more than 300 years ago Video Scientists were able to read a sealed letter written more than 300 years ago Video](https://cnnespanol.cnn.com/wp-content/uploads/2021/03/210303174141-cnn-red-carta-full-169.jpg?quality=100&strip=info)
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