Currency
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The ridges on the sides of coins are called reeding.
If you have three quarters, four dimes, and four pennies, you have $1.19. You also have the largest amount of money in coins without being able to make change for a dollar.
A quarter has 119 grooves around the edge.
A dime has 118 ridges around the edge.
The face of a penny can hold about thirty drops of water.
Money is made of woven linen, not paper
Every time you lick a stamp, you're consuming 1/10 of a calorie.
There are 293 ways to make change for a dollar.