I collect a mix of different coins (and some bills) but there is something about a penny. I like to box/roll search and I look for wheats, rares, errors, toning, just about anything that I think is interesting.
I know 25$ a box and when you get done and find say 10 or 20 reroll take them back and get your money back
Not always. The "wood grain effect" produced by improper planchet alloy mixture is simply a imbalanced ratio of Copper and the base metals (that produced Bronze). Laminations, however, can occur in a variety of ways. Most typically when foreign substancess (wood is one known substance) are inadvertently rolled into the Bronze strips, soon-to-become blanks, when eventually these substances do not stay intact with the metal.
Brain fart. They (laminations) are caused by contaminants in the alloy of the coin. The wood grain effect is caused by improper alloy mixtures.