Shhessshhh
you just don't get it!!!!
(1) Warranty still valid the 1st time until Nikon discovered two screw were missing and internal "impact damage" which is not cover by warranty.
Since the original owner refuse to pay for the 1.2K repair fee,
Nikon have "mark" the Nikon Lens with description "etc two screw missing..etc etc etc" by indicating serial number for future referance.
and at same time, update in their system that warranty is void even though still got 7 month left.

Warranty cover manufacturing defects NOT Impact damage

(2)Current buyer sent in to Nikon Center for 2nd time since Seller indicate it still have 7 month warranty left.
From Nikon database, it show that warranty is VOID as it is a repeat case.

SO , what the blooody suspicious you talking about?

Arrogant seller who reallly trying to find loopholes from paying.