Facts of the $100 bill.
The vignette on the back of the $100 note is Independence Hall in Philadelphia. There are three people depicted in the engraving. Two (a man and a woman) are in front of the hall close to the building; the third person is a man pictured looking toward the building. There is no record that the man and woman are embracing.
The hands of the clock are set at approximately 4:10. Although the time is not readily identifiable to the naked eye, it may be verified if examined under twenty-fold magnification. There are no records explaining why that particular time was chosen.
You know.....I was reading this and didn't think much of it. Then I went to go take a smoke and a thought popped in my head.......this of course happens rarely for me.........so I went back to the page and read it again.....So here is a funny scenario for you on the story behind the picture.
A couple taking a nice lieserly walk on a warm afternoon, site seeing maybe, or just enjoying the afternoon, without a care in the world. Suddenly a man runs past them, stops and looks at the clock and franticly checking his watch.........then runs off as fast as he can, swearing for unknown reasons......
This man was frantic because it was 4:10.......and he may end up being late for getting home at "4:20"

Yes folks.......this appears to be the first recorded recognition from the Federal Government that 4:20 PM is in fact the perfect time of the day to smoke a toke of your favorite wacky weed.
Money Factory