1980 2.1/2 Guilden coin

I have a 2 and a half Guilden coin dated 1980 with the obverse side or reverse side minted the wrong way? Is this worth more if so where can I get a valuation?

Hi! Welcome to Numista and the Forum!

All Dutch Gulden-currency coins have the back side upside down with respect to the front side (which is indicated as 'coin orientation ↑↓' in the Numista catalog).
What you say appears to describe exactly this type of front-back orientation. Or am I misinterpreting?

Is it this one:
https://en.numista.com/catalogue/pieces736.html
Or this one:
https://en.numista.com/catalogue/pieces4249.html

You can find an indication of the value on the coin pages.

Here is a video that goes over alignment in detail: https://www.youtube.com/watch?v=z01oxY1__gg
The essence is in the images in the first reply in this thread: https://en.numista.com/forum/topic2645.html