Hey @Jan_Ther - right now, there’s not an explicit way to get the parent market via the currencySettings field, but it is something we are aware of being a limitation (there’s a bit more info in this thread here).
I can’t guarantee if/when this data would be made available in the API, but it is something on our radar. I’m going to add your report to the feature request I set up through that other thread though just so we can have that logged officially.
Let me know if I can clarify anything on my end here, happy to help 