I would like some help with some markings on a single tea cup by Paragon.The bottom markings are a double coat of arms side by side and underneath that there are the words 'by appoinment H.M THE QUEEN &H.M QUEEN MARY fine bone china england regd.The words queen are underlined,and ther seems to be a liitle marking in gold next to the righthand coat of arms.If anyone could put a date on this i would be more than obliged.the cup incidently is a light green with a floral pattern and finished in gold rims.many thanks wayne