I managed to visit National History Museum in Ljubljana when I was there. The first pictures are from Maistrova ulica which showed some heavy swords (incl. Schiavonas) and a cloak supposedly captured from Telli Hasan Pasha (
https://en.m.wikipedia.org/wiki/Telli_Hasan_Pasha) at Battle of Sisak (
https://en.m.wikipedia.org/wiki/Battle_of_Sisak). Utterly fascinating history worthy of a feature movie. Reality often surpasses fiction. You couldn’t make this stuff up...
The museum at Muzejska ulica showed some older exhibits from Migration age until medieaval times, and was very well organized and educating. There were some amazing swords there.
Overall, well worth a visit if in Ljubljana.