Sailor Fountain Pen Black Luster Nib: EF [Defective]

Defect:

The brass grip in the center of the second photo. When attaching or detaching the left and right parts in the third photo, only the outside of the grip spins freely. As a countermeasure, holding the grip firmly towards the center will prevent it from spinning. This defect does not cause any problems when writing. Please be careful only when attaching or detaching the parts.

This fountain pen was purchased in 2015.
It features an overall black finish and a forward-weighted balance.
I'm selling it because I don't use it much anymore.
There are no noticeable scratches.

The nib is 21k gold, and the line width is EF (Extra Fine).
One black cartridge ink will be included.

Thank you for looking.