Antique Biedermeier glass or Ranftbecher, around 1850, cobalt blue layered glass

Beautiful and well-preserved Biedermeier glass/Ranftbecher from Austria/Hungary, made in the mid-19th century. This Biedermeier glass made of cobalt blue/clear layered glass was mouth-blown and then cut. The bottom was repeatedly ground and polished. A very beautiful and precisely executed piece of craftsmanship.
Condition: The glass is undamaged, so no chipping etc. Only the gilding on the upper edge is rubbed.
Dimensions: Height 12 cm, diameter 7.5 cm