How to Distinguish 1981 Type 1 and 2 Proof Coins

In 1981 two varieties of "S" mintmarks can be found for all proof coin denominations. The minor details will vary from coin to coin so any coin you look at may not look exactly like the picture shown here, however the following characteristics are what you would use to determine which variety it is. The first one is commonly called type 1, and is the same mintmark that was used in the later part of 1979 and all of 1980. Type 2 proof coins were minted starting later in the year.

Note: Some type 1 coins have very clear mintmarks while some type 2 coins do not, so how clear or well struck the mintmark is does not indicate the type.

Type 1 Characteristics

1. This mintmark has smaller and more rounded serifs (the bulbous or ball-like formations at the beginning and end of the "S".)

2. If you look at the mintmark you will notice it has a dome shape like a bead of water.

3. The center loops of the "S" are also more of an oval shape.

Type 2 Characteristics

4. The mintmark has larger serifs.

5. These serif bulbs tend to look flattened. You will also notice that the mintmark has more of a plateau or more flat surface than the type 1.

6. The center loops have more of a circular shape.



To see more sample pictures of type 1 and 2 mintmarks from each denomination, click here.

To buy your 1981 proof coins, click here.