Vintage Hexagon Cloisonne Enamel Blue and similar items

Vintage Chinese cloisonne hexagon trinket powder box with flower design on blue back ground, and blue enamel inside. Measured 2 1/4"tall and 1 7/8" wide. Marked ????(Gu Yi Zhai Zang ).(Real Cloisonne is a labor intensive process sometime it takes many layer of enamel to cover the wiring, please look carefully before you purchase a cloisonne piece) Brand new, never use condition. Probably from the mid 60s to 70s. From store we use to operate in S. F. Chinatown from the 50s to 80s. California resident, please add sales tax. We will combine shipping for all purchases from our store, please wait for combined invoice Cloisonné, in the decorative arts, an enameling technique or any product of that technique, which consists of soldering to a metal surface delicate metal strips bent to the outline of a design and filling the resulting cellular spaces, called cloisons(French: ?partitions? or ?compartments?), with vitreous enamel paste. The object then is fired, ground smooth, and polished. Sometimes metal wire is used in place of the usual gold, brass, silver, or copper strips.