enygy wrote:
I looked at the two refurbished Nikon lenses I have, refurbished by Nikon...one has the marks, the other (more recently purchased) does not.
I purchased the one with the markings in late 2015, the one without the markings a couple of months ago. Both from Nikon.
So this is not a definitive way to tell, or perhaps Nikon no longer uses this system.
I think it's a guide that is still worth knowing. You have a fifty-fifty chance at best! B^)