2011/1/3 John Wild <JWild@xxxxxxxxxxxxxxxxxxxxxx>: > Hi Carlos, > > Looking at the SL35 lenses, they appear to be QBM III - having rubber grip > but without the aperture groove. Does this date them to before the SL35E or > do you think that as prototypes, they had not added that information link at > that point? Hi John: Considering each lens from the last e*** number you mentioned: *Prototype* Rollei Zeiss Distagon 25mm/f2.8 HFT: This lens was manufactured for QBM I, II, III, IV and V MT(42mm thread) by CZ Oberkochen, HFT (T*) from 1974, the sellers consider the lens they sell a "protoype" because it was made by Rollei as unique piece (QBM III made using the name Rollei), however Rollei made it for the brand "Voigtländer Color Skoparex" QBM II and QBM V (42mm hread) under CZ license. Manufactured from 1970 to 1991. *Prototype*Rollei Zeiss Tele-Tessar 200mm f/3.5: Sample in the auction site looks QBM II and it could be a QBM II pre-production prototype, it was manufactured from QBM I to V TM (42mm), made by CZ Oberkochen and Rollei under CZ license, HFT from 1973. Voigtländer (Rollei) versions "Color Dynarex" QBM II and V TM (42mm). Manufactured from 1970 to 1987. *Prototype* Rollei Zeiss Distagon 15mm f/3.5 HFT: This lens was made by Carl Zeiss Oberkochen only and for QBM I, II and IV, HFT (T*) version only, the QBM I version in the auction could be a pre-production prototype, no Voigtländer (Rollei) versions. Manufactured from 1973 to 1989. *Prototype* Rollei Zeiss Distagon 18mm/f4 HFT: The lens in the auction is QBM I and then it could be a pre-production prototype; it was made by CZ Oberkochen only and for QBM I, II and IV, HFT (T*) version only, no Voigtländer (Rollei) versions. Manufactured from September 1972 to 1992. *Prototype 2 lenses* Rollei Zeiss Planar 135mm f/2 HFT: These are QBM III prototypes, production for the market is not known. Carlos --- Rollei List - Post to rollei_list@xxxxxxxxxxxxx - Subscribe at rollei_list-request@xxxxxxxxxxxxx with 'subscribe' in the subject field OR by logging into www.freelists.org - Unsubscribe at rollei_list-request@xxxxxxxxxxxxx with 'unsubscribe' in the subject field OR by logging into www.freelists.org - Online, searchable archives are available at //www.freelists.org/archives/rollei_list