Help to identify Japanese antique jar

Recently I have been in one of the estate sales and I came across an antique small jar it looks to have a not shiny glazed surface but only polished from the inside. I believe it is Japanese . It has a signature as shown in pictures ( I can’t read). When I examined the surface closely I found an amazing art work in this piece. With my magnifier I was able to see that every border line of every geometrical shape of the figures is actually shaped by a fine copper or brass wire every tiny circle every leaf and flower everything is bordered or shaped by this fine copper wire and colored. I do not know how they construct it as the copper lines spread in a beautiful and precised way to give perfection to the piece. I know nothing about such items weather it is a porcelain or pottery who makes it date but it has some writing underneath I hope it will help to identify.