You have a lovely tea set that is for sure, Looks handpainted and in excellent condition. However, what it appears to me is a Teaset that is vintage at best. Older hallmarks of 100+ years are usually characters and early 1900 to pre war 1930 are usually marked Nippon, and japan or occupied japan between 1945 - 1952. The overall condition says maybe 60's. This set is made as a Export or more likely Souvenir or tourist set. Based off the painting style and the fact that the cups have handles, and the shape of the Teapot handle looks rather Modern Western style. I did look through the books and my favorite japan markings books to no Avail, but with so many Asian and japan markings this is of little surprise. A set like this in excellent condition may top out at about $75.00, If any chips or crack half that. However the unfortunate reality is each tea cup by itself would get you $15.00 a piece and the Teapot may get you $30.00. There are Many collectors of cups, they want one to add to a collection not 6, and a good hand painted cup can and will sale, then you have many who just collect teapots. Not that I suggest you break the set, but just thought I would inform you of the truth of the Tea Set, Not as many collect entire Sets.