Hi,welcome to the forum.
Dutch (hall)marks, the year letter could be the Gothic D(?) for 1888 or Gothic M(?) for 1896, Dutch lion passant walking the right way, Minerva head. I believe the maker's mark is not showing, if possible please check/clean & show all the marks. For more information about Dutch marks see:
viewtopic.php?f=5&t=32028Best,
Oel.