subtlelikeatrex
Member
It may be a lensboard from a different camera. It may be original but never said "special". It may be a duplicate of the lens that came with the camera. It's possible that camera came with the 127mm Ektar (which would've been an upgrade) or the Optar. But that lens is probably what's always been on it.
Where do I find the serial number on this lens? There’s one clearly visible on the side of the shutter housing but I don’t know if that correlates to the Schneider Kreuznach serial number dates.