Vermeil Silver Filigree Flower Pin

This filigree flower pin looks delicate but it is actually quite sturdy and well made.  It was created from vermeil silver filigree, sometimes called spun silver.  It is highly detailed with four tiers of filigree petals and a center stamen.  I estimate it to be from the late Victorian or Edwardian time period. Depending on the country it was made in, it could be a bit later as well. It has an early riveted hinge and c-clasp. There are two hallmarks or purity marks on the pin stem but I cannot ID them.