Nochmals, entschuldigung das ich Englisch schreibe.
Also, sorry that I am not as precise as Henry wants us to be, but when i fish out the "Distagon" from my collection, I will give more details. Mr. Thewes, the Alpa expert, states that Alpa comissioned some samples from Rollei Singapore, but decided that the quality was sub-standard (or what I believe to be an eqally plausible explanation: that they would not earn enough by relabelling them) . My samples are still working well.
The "Auto Alpa Color" lenses had M42 mounts and Pentax-style aperture pins, but were supplied with mount converters by Alpa. I do not have my 35mm Distagon ? Rollei? to hand, but happen to be using my 135\4 right now and that looks like the teletessar 135\4. 6 blades, smallest aperture 32, close focus 1,6m . Focus ring throw a bit more than 180 degrees..
I am not sure that Alpa actually just comissioned samples. When I bought one copy of the entire range of strange Alpa lenses from Cambridge Camera in New York 20 years or so ago (cheaply), they were sitting on the shelves in large numbers, well, perhaps not the prototypes, but the Japanese efforts were. My Tele Tessar?\Dynarex? is number 25169 . That does not look like a prototype number.
I will return with details on the Singapore "Distagon" in a week or so. No time now.
p.