I think this is getting very technical, but on the following coins, the ruler is listed incorrectly both on Numista and in Krause:
https://en.numista.com/catalogue/pieces20816.html
https://en.numista.com/catalogue/pieces23942.html
Given that Anhalt-Bernburg and Anhalt-Bernburg-Schaumburg-Hoym were very tiny states, and were very interconnected dynastically, I think this is a fair oversight. They were two different states, however, and while Viktor II KarlFriedrich was the Prince of Anhalt-Bernburg-Schaumburg-Hoym from 1806-1812, this coin is from Anhalt-Bernburg, and the Prince of Anhalt-Bernburg from 1721-1765 was Viktor Friedrich, without numeration.
I have just entered in a new coin, which I plan to take pictures of this weekend, that is also an Anhalt-Bernburg coin:
https://en.numista.com/catalogue/pieces29710.html
I noticed, though, when entering that coin, that "German States \ Anhalt-Bernburg-Schaumburg-Hoym" is not an option; that entity did issue a few thalers in 1774, although for the rest of its existence it likely used either the coins of Anhalt-Bernburg proper, or used various surrounding states' coinage.
Still, to be technical, Anhalt-Bernburg was the issuer of these coins, and therefore the correct ruler should be listed. I know Krause has it wrong as well, but Krause makes mistakes.
