Could it be Limoges? ASK THE ANTIQUES ROAD SHOW EXPERTS GEOFFREY MUNN.
A I have consulted a specialist at the V&A and we agree that the scene probably depicts the wedding of the Virgin Mary and that it's a Limoges enamel piece, c1700 or later, from a workshop such as that of Pierre 11 Nouailher (c1657-1717). There is a possibility, however, that it's a later 19th-century copy.
The inscription means, "God, come to my aid. Lord, make haste to help me."
These words are found in all medieval Books of Hours, the devotional books made for the laity. If it is 18th century, it could make pounds 1,200 in a specialist sale.
Questions taken from the current issue of BBC Homes &Antiques magazine - on sale now, pounds 3.30