If you like your vases blue, you'll like these. These little vases are from the Blue Series. Made by Soholm, Denmark they were designed by Einar Johansen. I would say they date from the 1960s or early 1970s.
As well as being an intense shade of deep blue, these vases have two contrasting surfaces, the rich, glossy blue areas are indented with triangular repeat patterns. Sitting next to the blue bodies are the necks in a semi-matt black, almost leather-like, finish.
I'm a big fan of this range of pottery, it always seems to display so well.
Here are two more pieces of Soholm Pottery that I have recently sold on Potshots.