Vintage pearl necklace and earrings

by Kathy L
(Weymouth MA)

Hi I have a vintage pearl necklace with about 6 different markings on it. One mark almost looks like the Olympic rings but the rings don't overlap their just joined together (touching) there's another one that says 925 which I know is the silver mark and another that says LL. there's 3 others too I think one is just an H alone and the other two are so small I can't even tell with a magnifier. Also the closure on the necklace isn't one like I have seen before and I don't even know how it works. It looks like a horseshoe on one end and there's three linked together ovals on the other end. The chain also has dangly decorations along with the pearls they look like tiny discs but they are not completely circular almost like a pie with a slice taken out. Any help would be greatly appreciated thank you so much! :-)