Complex sentence: Bergmann was noted for his detailed and colorful work, and signing either a'B' in an urn-shaped cartouche or'Nam Greb' --'Bergman' in reverse.
Split into simpler sentences: Bergmann was noted for his detailed and colorful work. He signed with either a'B' in an urn-shaped cartouche or'Nam Greb' --'Bergman' in reverse.