That is interesting. I see them sometimes on Ebay, and I assumed they were either of the Angulon or double-Gauss type. Can you confirm that it consists of four meniscus elements?
I see now that here is also an "O Weitwinkel Anastigmat". I have always assumed that the letter had something to do with the lens being coated, like V-Vergütet. Maybe it does, or maybe it has to do with the construction of the lens? Or maybe the construction was changed, improved, or different constructions were used for different focal lenghts.
The Leitmeyr Sytar, normal lens, is a dialyte like the Eurynar, Celor and Dogmar, and very good.