10 Filler (HUF) coin - 1916

I have a question about this coin:

https://en.numista.com/catalogue/pieces10041.html

I have one of these from 1916 which it says it's rare. I tried to find some details about why this particular coin is rare or something about it but I couldn't find anything. How rare is it ? Is it valuable ? I'm asking because I already have one coin of this denomination (from 1915) which is a lot less circulated in my permanent collection.

Thank you.

P.S. Sorry if I posted this in the wrong place.

the one you have I guess is probably this one https://en.numista.com/catalogue/pieces7098.html

Oh ! I missed that one. You might be right.

Probably stupid question, but how can I tell the difference between the two ? I don't think I can tell just by looking at them. No idea what 100 year old iron and 100 year old copper-nickel-zinc should look like ...

Sorry I don't know how to tell the difference of which is which, but maybe a user of Numista who owns a 10 Filler made out of iron could tell you the weight; maybe there's a slight difference. Sorry - I'm really not sure.

Use a magnet: Iron is magnetic, Copper-Nickel-Zinc isn't.

Citation: ArnoVUse a magnet: Iron is magnetic, Copper-Nickel-Zinc isn't.

Did that. Turns out I have the much more common, copper-nickel-zinc coin.
Oh well, thank you for the help. :)