Have a nice day and health.
My advice is to ask the State Mint in that country for information.
All state circulation coins were produced under the Act-decree , in which is the process and process of production. But in normal countries and modern history.
( Old coins really need metal analysis )
However, do not rely on the fact that the data published here is many times accurate.
I will give an example: my beloved made for 30 years -the composition of the metal is disclosed here ,, aluminum - bronze ,,
https://en.numista.com/catalogue/pieces2015.html
however, reality and accuracy are different. ,, 91 % Cu (copper), 8 % Al (aluminium), 1% Mn (manganese),,
https://www.zlate-mince.cz/cssr_1_kcs.htm
all our modern coins listed here ,, aluminum ,,
https://en.numista.com/catalogue/pieces2157.html
( Here I must add that there has been a correction and at least in the comments there is a specified composition )
they also contain magnesium , I think one percent.
https://www.zlate-mince.cz/CRO_10_h.htm
And here on this page you have all Czech modern coins described and precisely shown!
So ask someone from that country to publish their coins.
And colleagues, each coin also carries its personal history and story sometimes really ( creation of the Czechoslovak crown) special.
https://cs.wikipedia.org/wiki/Marie_Uchytilov%C3%A1
Ahoj Ivan