Christian Bechtler produced two versions of his $1 gold coins, one of 28 grains and another of 30 grains. The two types are of roughly equal rarity when one includes the Reversed N variety of the 28 grains version. In fact, the C. Bechtler $1 coins are among the most common of all the Bechtler issues, second only to the A. Bechtler $1 gold pieces.
The 30 grains C. Bechtler $1 normally comes with a reeded edge (Kagin 1), but at least two examples are known with a plain edge (Kagin 1A).
Mint State examples of the C. Bechtler 30 grains $1 are very rare, topping out at MS63.