I own a Tea set which has been past down for over 100 years and have know idea of value or the type of wear it is.The set contains,teapot complete with matching stand,milk jug,sugar basin with lid.12 cups.12 dish type scausers and 2 coffee cup.It is white with gold inlay and a grape type partern in brown and purple/pink grapes.The only marking on the underside is:-179. i would be greatful for any help with this.