D&D Nolzur's Marvelous Unpainted Miniatures: Male Human Fighter - Rules of Play says:
These highly detailed miniatures are pre-primed with Acrylicos Vallejo primer. This pack includes a low-level and high-level miniature of the same character.
These highly detailed miniatures are pre-primed with Acrylicos Vallejo primer. This pack includes a low-level and high-level miniature of the same character.