You're Never Going To Believe The Star Note I Was Handed

Someone at work handed me a 1974 $1. It's a bit flat in the way that suggests it was in a book for awhile, but it also looks like it's spent most of the last 40 years in circulation. I'm in awe--HOW?! It's fragile and it's going to require its own currency sleeve separate from my book of currency, but it's all in one piece.

(I know someone is going to ask for pictures. Online estimates show it's worth face, so I wetted it in distilled water and pressed it in a paper towel between book leaves to get rid of some of the dirt. I can't lower the value any more than it's already lowered by the state of the paper, so I'm not worried about the consequence of doing so as long as the bill remains in one piece. It's currently still drying and I don't want to move it until it's properly dry again, so pictures will be incoming once that happens.)