I think this is the last information I need to fully ID my ornamental set. This time I need little help with the date letter, which is a "M" but I dont know what kind. I can guess its the "M" for 1947 because all pieces are near that date.
I have to specially thanks to Oel for being like a teacher in this matter (I have learned many things).
Admin edit: Maker's mark:*N10
This ornamental serving fork is made for export in Schoonhoven by the Firm of the brothers Niekerk, active 1943-1970.