Eastern European jacket

We only have a few details on this, we know it has been in the family for several generations and it is most likely from Eastern Europe, possibly turkey. We were once told it was owned by a royal family or prince possibly. Also the coat is quite heavy and we are told that the reason is because a lot of the threading is made with real gold. A ball park value would be greatly appreciated and please let us know if we need to provide further information that we may have missed

Good