Hi,
Little late but I believe it to be Dutch pseudo marks. See:
http://www.925-1000.com/forum/viewtopic.php?f=5&t=28590 for
Rinze Jans Spaanstra.
MC pseudo maker’s mark, a
fern leave another pseudo maker’s mark and a
running animal (up site down) the third pseudo maker’s mark. Hallmark Lion Rampant 1, standard mark to indicate silver 934/1000 fineness or 93.4% pure silver used 1814-1953. And with export key mark to indicate 2/3 duty restitution upon export valid 1853 till 1953. Original maker's mark
RS above 158 for; Rinze Jans Spaanstra
Oel.