The value of Nippon is not great !! There is a lot of it on the market !! I would say your bud vases ( and yes they often are used for hat pin holders) would bring between $25. and $35. for the pair !! They have the moriage decoration and that would put them on the upper end of that estimate !! And much depend on who is looking and at what time !! There are some people who would pay more,, if they liked them !! Remember an item is only worth what someone is willing to pay for it !!