So it's nice to have some evidence verifying that provenance.
Not to be ungrateful, but is there anything that might be the manufacturer's name? Is that upper line indeed a date, such as "Quality Cloisonne Since November 1, 1949" ;^)

I never paid much attention in the news to the islands near China's coast that are claimed by Taiwan, but the Wikipedia article on Kinmen (formerly Quemoy) had this interesting little tidbit:

Many Taiwanese businesspeople use the link through Kinmen to enter the Chinese mainland, seeing it as cheaper and easier than entering through Hong Kong. However, this changed following the 2005 Pan-Blue visits to mainland China and the presidential and legislative victories of the KMT, that allowed easier Cross-Strait relations. Kinmen has experienced a considerable economic boom as businesspeople relocate to the island for easier access to the vast markets of the PRC.