What This Coin Looks Like (Obverse, Reverse, Mint Mark Location, Special Features, etc.): One major variety is the 1828 Capped Bust Half Dollar with a curled/curved base on the number "2". There were two varieties of this curl base 2. This variety has a knob on the upper tip of the "2" while the other variety has no knob and simply curls up. Below is an example comparison image of the 1828 curl base 2 vs square base 2 half dollar varieties:
Also here is the example comparison image of the 1828 knobbed 2 vs no knob 2 half dollar varieties:
Coin Value Chart: Typical Coin Prices, Values and Worth in USD based on Grade/Condition