How many ridges (often called 'reeds') are on the edge of the U.S. 25 cent coin, the quarter?

I have 30 gold coins, My brother used to work in the airport one person gave him a box of gold and coins as a tip. he used most of them for simpil stuff like food , then I bought them from him because I'm a collector. hope one day I'll get good money off of them then pass the money on.