If you're a grammar nerd or someone who pays intimate attention to detail, there can be nothing as irksome as a incorrect grammar – be it a spelling error, improper punctuation or a harmless typo.

Aside from being a pain and total distraction to the reader, major typos can actually result in major costs for the book manufacturers if the book is a bestseller or an all-time classic.

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This, in turn, means that owning one of these famously misprinted books could have you owning an extremely valuable collector's item – And you might not even know it!

One of the most valuable misprints can be found in the original 1885 edition of 'The Adventures of Huckleberry Finn" by Mark Twain, the classic tale of friendship and mischief along the Mississippi River that served as the sequel to "The Adventures of Tom Sawyer".

In the first printed issue of the novel, the word "Decides" was misprinted as "Decided", and the word "saw" is mistyped as "was" on page 57.

And those two seemingly minuscule mishaps translate into big dollar signs for those who own a copy with the typos in tact – versions of the novel with these mistakes are fetching over $13,000 online, with signed copies going for over $162,000!

Who knew a couple of simple keyboard slips could be worth so much?

These two Twain typos are well-known in the world of rare book collectors – But what if there were more that haven't been caught yet?

If you own a copy of "The Adventures of Huckleberry Finn", you better go check!

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