How much is this misprinted shadowless dragonair?

I got this in a lot I bought and can’t find any like it. The misprint is in the word “number” the letter “u” is missing and it has a rainbow smear. I could only find the first edition version of it and I only found 3 of them. How much do you guys and girls think it’s worth if it was graded out at a PSA 7 or 8? Also how rare is this error?

I am not a misprint expert, but as a typical collector I would see it as either a regular dragonair unlimited, or value it even worse. There nothing too unique about this misprint that provides an added value to the card. That’s just my personal opinion though.

Some past discussion about this