1. The unit is the _mark_. Its value is $.2385 in United States money.

2. The coins of the German Empire are of gold, silver, nickel, and

copper. The gold coins are the 20-mark piece, the 10-mark piece, and the

5-mark piece. The silver coins are the _two_ and _one_ mark pieces; the

nickel coins are the _ten_ and _five_ pfennig pieces; and the copper

coins are the _two_ and one _pfennig_ pieces.