Can you confirm your lens has 9 aperture blades? If so, yours has the highest serial number I have seen, even higher than some early samples with 7 blades. Given the relatively late serial number, the hood might actually correct for this lens. You have a complete set with box, insert, instructions, bubble case, and hood, so I suspect the hood is original with the lens when it was new. What is the date on the instruction book? There is usually a date indication on the back page, lower right. Thanks.
The boxed GN-Nikkor is from the ebay images. It is just purchased so on the way to me ($219 + shipping).
This lens has probably only 7 blades. A couple more ebay images attached which should confirm it is only 7 blades?
I was looking a hood for my own GN-Nikkor but ended up getting a whole lens incl. the hood (with the F-logo). So I am still looking for an additional hood so I have for both lenses.
My own GN-Nikkor has 9-blades and has no. 716656. So a little older than the one just purchased. The white writings at the front (Nippon Kogaku etc...) seems the same.
There are several versions for a collector it seems. Old type Kogaku (9 / 7 blades). Nikon branded instead of Kogaku. The multicoated C-version. Ai-version etc.......not easy to be a collector. It is good I am just a little bit of a collector so I don't need them all :-)