Hello Sorror - It's very hard to answer correctly at your question. At the 90% your specimen it's a Horoclavidae, but I can't tell you exactly the Genus. Very difficoult: Anacithara? Graciliclava? Psittacodrillia? Haedoplerura? All these four genus they have a very similar teleoconch (in shape), but the early whorls are more closed at the Carinapex. Look the photos in the attach. All the best Gianluigi.