It might be a mistake, for these two reasons:
- When the coins first appear in Krause these series were described as copper-nickel coins and steel coins, so Krause made already mistakes from in the beginning:

- Because Schön only has the nickel plated steel as composition in his catalog.
On the other hand, Schön also has the “100 Lingsshil” variety in his catalog, and for those who know Schön, they also give KM# reference numbers between brackets. And the KM# numbers in Schön for the other series correspondent with the “100 Lingsshil” variety. In my experience Schön has a lot less mistakes than Krause, so the difference between both series maybe not the composition but the denomination.
And since the other denomination is in Schön, the “100 Lingsshil” variety maybe is unjustly in the exonumia sector here in Numista.