Aureus Magnus 1 ducat gold? [solved]

Weight: 3.40g

Diameter: 20mm

Thickness: ~.8-.9mm

Composition: claims to be gold (.980)

Edge: plain

Is not magnetic

I have a fantasy coin here which I believe is one of the coins made by Aureus Magnus. I found a similar coin on the catalog here:

N#452073

I also found a picture of a very similar looking coin on the issuer's website (website is in German):

http://www.aureus-magnus.com/katalog/emission5.html

However, the coin on the website, titled (69) Lunam Calcavit 1969, does not show the purity, .980 on it. Some other coins by this issuer do though. So I'm not sure if I have a fake, or if mine is real. Any help would be greatly appreciated. I'd be glad to provide additional information if there's anything I left out.

You have 1 ducat variant of N#445570 .  Not all denominations are registered in Numista. I've registered only 10 ducats variants and other denominations that had authorized images. If you want, you can contribute to catalogue by adding 1 ducat page and your images under licenses listed in your user profile.

You can check if it is gold by testing its weight and density or by taking coin to goldsmith.

https://en.numista.com/numisdoc/determining-the-metal-of-a-coin-27.html

If it is gold, coin is probably real. Its value is around bullion value, unless you find person interested in those pieces. No point in faking coin with little market interest.