When it comes to the Rolleiflex TLR, I can't recall ever seeing any Zeiss-Opton Planars, though it's possible that there were some Zeiss-Opton Planars on Rolleiflexes. I mean lenses marked Zeiss-Opton Planar.
And it's correct that other lenses in addition to the Tessar were marked Zeiss-Opton, including those for the SL66, the Contax RF, medium format folders and others.