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

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

Thank you for the quick reply!