1914 1 Peso Banknote With Weird Line

Here I have is a Mexican Peso bill I found at a swap meet. It never really came to thought until I kept on looking at this weird line on the corner of the bill. I've been a collector for a long while, but my knowledge with banknotes is not so much, mostly coins. Could it mean it's fake or something? Maybe the sheets were made this way. Possibly an error? It does feel good, the paper seems good. It has that vintage odor bills get, the print doesnt look wrong. Am I just worrying too much? Its larger compared to a modern US dollar. Some help and knowledge would be many thanks!

 

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I believe they are called alignment marks, used by many different bank note printers. I see them occasionally on older US small size notes.