I think I know how to distinguish coin minted in Alger and which one in Kremnitz from 1984 ( 30,001,000 minted in Kremnitz (SK); 1,839,000 minted in Alger (DZ) ) year 1989 minted in Algeria is rare ( 3,759,000 ). Don't you think that coin minted 1984 with mintage 1.839,000 should be more rare, am I correct ? If you have this coin from 1984 please send me more photo so I can know if I'm wrong or not.
https://en.numista.com/catalogue/pieces2923.html
This is Kremnitz Mint coin 1984


This is Alger mint coin year 1989

This is coin from 1984 where I think it's from Alger mint

Need some more examples, if you have this coin please let me know.
Regards,
Damian

