This looks like H. attenuata, not H. fasciata.

The upper surface of the leaves is informative: H. fasciata does not have tubercles on this part of the leaf. I would like to propose moving this image to the attenuata page in the database:

Haworthia (Haworthiopsis attenuata)

Please let me know if you have a problem with this move.

Go ahead. This is an Altman plant so it doesn't surprise me one bit that it was mislabeled.

Done!