A few weeks ago, I could not resist buying an unusual 135mm 1/3.5 NIKKOR-Q Auto.
Mechanically and optically identical to the usual model, it is all bare polished metal. No paint, no marking, except the engraving. Residual painting is visible in the DOF markings, so the paint was removed. The seller was told the paint was removed to ease sterilization for use in a lab environment but he got no proof nor confirmation.
Have you heard this before?
I have not taken a picture with it yet. It is a F version, unmodifiable to AI and I loaned my DF to a friend ... I need to retrieve it.