NS is the Swedish mark for nickel silver, probably silver plated. The middle mark is Saint Erik, the locality mark of Stockholm. I haven't found any information on who L. Axelson is, but since there is/was no control on nickel silver it can be very hard to identify the makers if they didn't also make silver objects. Unfortunately, I don't have a book on silver makers between 1850 and 1912, and by the look of it, that's where this ladle belongs. You could try to check that if you have the possibility.