Hi,
Drove me nuts:

What I thought to be a maker's mark in fact is another pseudo or fake maker's mark
VB; seen on cups, spoons, tea pots
# 357 Valse Zilvermerken in Nederland K. A. Citroen

This sugar basket with cobalt blue liner could have been made in the Dutch province of Groningen and perhaps by the firm of the brothers Niekerk, registered in Groningen 1899-1927.
Peter