Nikon Nikon Angled Finder DR-6 for Rectangular Window

This is a Nikon DR-6 variable angle finder for Nikon's right-angle finders.

It was passed down from my father, so I don't know the exact purchase date or other details. Although I am an amateur, photography is my hobby, and I have always handled cameras, lenses, and accessories with care, meticulously cleaning them after each use and storing them in dedicated cases.
I don't believe there are any noticeable scratches or dirt, but please understand that there may be minor dust that does not affect photography.

I am not an expert, but I will do my best to answer any questions about the condition, including providing additional images if possible.

Please refrain from negotiating the price with potential buyers.
I may adjust the price myself based on the situation.
If you purchase multiple items, I will discount the overlapping shipping costs, so please let me know in the comments.

Only the item shown in the images is included; there are no other accessories.