Art Nouveau Souvenir from Hahnenklee im Harz

I 've been watching it on a bid site for quite a long time but neither anybody wanted to buy it nor a seller wanted to cut the price so finally I purchased the vase.
First of all it looks quite Loetzy with the "gelb grun" colour and gold enamelling but it isn't identified as a new Loetz DEK.It's made of so called "optic" glass and has a big polished pontil that I wasn't able to show in the photo.
Maybe the most interesting is the writing - Hahnenklee i/H.This has been a very popular resort since then in the Harz Mountains , the north of Germany.The area is famous for its witches and legends about St.Walburg.
There is Glasmanufaktur Harz in Derenburg that has a witch on their glass label.I'm afraid, I can't attribute the vase to them because they were established in 1949.