Pipe - Bone, Reindeer horn

Quite an incredible piece in four parts (two removable sections, each consisting of two non-removable parts) finely engraved with plants and reindeer.
Inscription in the center 'Renhorn pipe fratronis' (the fellowship of the reindeer wood pipe).
It is not obstructed, note a flaw at the junction of the two parts.
No trace of other works of this kind online.
A unique piece that you won’t see again so soon.
Very likely originating from Sweden, Denmark, or Norway.