How Coin Metal is manufactured
There is a four step process used to make coins. The blanks are heated in an annealing furnace to soften them. Then they are run through a washer and dryer. The blanks are heated in an annealing furnace to soften them. Then they are run through a washer and dryer. Next, the good blanks go through an upsetting mill. This raises a rim around their edges. Finally, the blanks go to the coining press. Here, they are stamped with the designs and inscriptions which make them genuine United States coins.
Three physical properties of a penny
1. A penny is round in shape
2. A new penny is shiny and bright.
3. The color of a penny is a metallic copper.
Three chemical properties of a penny
1. A penny has the ability to rust
2. Copper oxides when it is exposed to oxygen
3. Copper also tarnishes when exposed to certain sulfides.
These are U.S. coins
These are Canadian Coins.
These coins are worth lots of money since they are collectible coins.