Palo:
It reminds me of some pieces from Plus and Randsfjordglass out of Norway in the 60's 70's, the kind of piece Benny Motzfeltd or Torgi Torgersen might make, or even John Orwar Lake for Ekenas. I'm not necessarily suggesting those three names, but the area and the time might be a good place to start.
Good luck,
David