Hello, Iâ€™m looking to get as much info as possible on this set, country of origin, age (about) I would like to sell it. There are wear marks on the base of each piece I know, I just want to be as accurate as possible, the stoppers are ground on the side, help oneâ€™s stuck. They are blown glass and each cut is not precisely as the others, they are each a lit different. Any info would be greatly appreciated thank you. I would call it a blown glass, cut to clear cobalt overlay vanity set.