As dpurdy said, the 2.8A has an interesting history. As I understand it, Rollei first used Zeiss Opton lenses that turned out to be sub-optimal, then swapped them out for Tessars. As a result, there aren't a lost of Zeiss Opton 2.8A cameras left out there for collectors. I'm sure there's more info on the web provided by real Rollei experts.
No. Wrong. Really, really, wrong.
Lenses which had been made for the prewar Zeiss Ikoflex (80.2.8 Jena Tessars) had been stored for the duration of WW2. These were available for Rollei to use in their post war camera.
Half the production of the first batch was from Jena, half from Oberkochen. SOME of the Jena lenses had become mismatched ( the plant was bombed every night ) and prewar coating was certainly not as good as postwar.
So, Rollei recalled the bad production block, and Zeiss replaced them with new, excellent, OPTON (Oberkochen) Tessars. Ensuing production was filled with new lenses. But Rollei was embarrassed and changed the camera as quickly as they could.
Soon, Planars became available, whose wide open performance was better than the Tessar, and then Xenotars (Schneider Planars), and that was that.
In short, it was a small problem with the 80/2.8 Tessars, they were Jena Tessars, the OPTONS are very fine indeed, and the bad ones were replaced.
A quick visit to a Rollei history site would clear up any questions. And, for history buffs, Zeiss had not been divided yet.
Again, the OPTON Tessars are great, and any Jena Tessars that remain, work very well. I'd be proud to own the camera in question !