The woody on the other hand is caused by a poor alloying of the copper, tin and zinc. Some of the best ones are from right after ww2 when brass shell cases were incorporated in the cent alloy> In researching this I found Beee utiful cents with the yellow brass color and the red copper, just soooo cool.
Here is a video of how a quarter is made and you can see the the planchet material being pulled off of the roll by the punch feed rollers.
Here is the real woody