Serial number: 337935
This is one of the secret weapons of the Nikon range for those in the know.
It adds 1.7 times the zoom of your lens by putting it between the camera and the lens - using Nikon’s finest glass you only loose 1.4 stops by doing so - and it only weighs 250grams.
If compatible(check specs!!) a Nikon 70mm lens becomes a 119; a 200mm becomes a 340mm; a Nikon 300mm becomes a 510mm!
Note: check your lens is compatible - many but not all are compatible. I can’t be responsible if you don’t!
This isn’t some 3rd party gimmick - this was and still a Nikon pro piece of equipment.
The 1.7 is generally consider the best one: the sweet spot between the 1.4x tele(maintains speed a little better but not much gain) and the 2.0x tele(amazing to double your focal length but you loose much more speed and it’s really hard to use in the real world!!).
This is it not sealed-brand-new but I would qualify from little such use it might be close to mint - close to because I’m not a professional…which is probably why it’s not been used much or used hard!
It’s in-box but the box has been in storage separately so unlike a pro used lens, the box saw more bumps than the lens.
But look at the pictures - should tell the story.
Always carefully when i have employed its use.
No fungus, scratches. Nor discernible dust I can see.