Julie Cartwright Antiques has dated this piece to the 1910s.

The spoons come in a presentation case, not the original but a good fit.
Hallmarks:
David Andersen Marks followed by NORWAY
Dimensions:
Length: 9cm / 3.4 inches.
Condition:
Two of the six spoons with a very well executed repairs, as can bee seen in the fourth image on gilt bowls.
This is reflected in the price and does not affect the usability of the spoons and is barely noticeable.
Julie Cartwright Antiques has dated this piece to the 1910s.
You can view the stock and full dealer information on the Julie Cartwright Antiques Profile Page