Beautiful lens, have been told it was the updated version of the Zeiss 120mm Macro lens for digital backs, but not sure exactly what's different in the optics. This lens appears to be new, unused, but I've had it open, tested it (very sharp, working well) so I'm going to list it as used. See pictures though -very mint like. I've not had any others of these here - and this one has a xxx0001 serial .... just pointing that out for what it's worth. Zeiss doesn't appear on the lens, nor does Rollei on the lens caps. Interesting!