There are different uses for the term variety.
1. There are year varieties where the design changed during that year.
IE: 1998-2000 cents had a year variety because of the wrong year/reverse was used during the same year.


2. Some years they used different types of design on coins with the same year.
IE: 1976
Ike dollars had a different reverse design for the 1975 dollars dated 1976. Type 'A' On the 1976
Ike dollars there were a different reverse design with different sizes of devices. they are Type B. So they were also year varieties.

3. Doubled dies are called Varieties as they are different than the normal dies because the designs were created different than normal because of hub doubling.


4. RPMs are called varieties as they are different because of the double or more punching that is seen on the mintmark. If the mintmark is larger, it doesn't make it a RPM. In order to have a RPM, there has to be seen evidence of punchings. (plural)

Just because this mintmark is larger, it doesn't make a RPM. Why? Because there is no evidence of multiple punches. Two or more are needed to see seen on the mintmarks of pre 1990 coins in order for it to be called a RPM:





5. Inverted mintmarks are also called a die viariety:

They are seen from the first punching forward.
6. Over mintmarks are also called a die variety:

More could be added, but I hope everyone under stands that if a die is altered, it doesn't make it a new variety. A variety is started from coin #1. While an altered die, is just a die event. (not a new variety, unless you are in
VAM world)
CoopHome:
What is a die variety? And how is it different from a die event?