Dutch Apostle Spoons

Hello- I have a set of Apostle spoons, each with 2 different sets of hallmarks. One is British import marks for 1890 and Louis Landsberg. The older Dutch marks are giving me a hard time. Are they pseudomarks? Any enlightenment would be appreciated.
Thank you
1


Almost certainly pseudo marks, but contemporaneous, not “older”. They don’t seem to be official silver marks.

Thank you for the quick reply!