* AN-ver: This is the most common pronunciation, with emphasis on the first syllable. It's often used for the name of the city of Antwerp in Belgium.
* an-VER: This pronunciation emphasizes the second syllable, and is less common, but still possible. It might be used if someone is trying to make the name sound more formal or sophisticated.
* AN-vər: This pronunciation puts the stress on the first syllable and uses a more neutral vowel sound for the second syllable. This might be used by someone who is unfamiliar with the name and is trying to sound it out.
Ultimately, the best way to know how to pronounce "Anver" is to ask the person who bears the name how they prefer to pronounce it.