How can you tell if a 1861 confederate states of America coin is fake I have one that has a 1 with a line under it and 100 under the line. this is on the back of the coin?

Answer 1

It is almost certainly fake. The Confederacy did take over the former US Mint branch in New Orleans, and did strike a very few half dollars and one cent pieces in 1861. This was all the coinage produced by the Confederacy, and the very, very few surviving examples are extremely scarce and very valuable. Both the Confederate half dollar and penny have been extensively reproduced, and you almost certainly have one of this very numerous replicas.