What this coin looks like (obverse, reverse, mint mark location, special features, etc.):
There were two varieties of the 1798 Draped Bust Dime in regards to the size of the "8" in the 1798 date. The small "8" appears slightly smaller and the date has a different style. In addition: The reverse of the "small 8" variety will feature only 4 berries on the branch in the eagle's claw. The differences and comparison between the 1798 Small 8 vs Large 8 Draped Bust Dime can be seen in the example images below. Source of example images are courtesy of Heritage Auctions.
Coin valuation chart: Typical coin prices, values and worth per grade or condition - in USD