Richard Ginori Coffee Pot, Sugar Bowl and Cream Jug

I would like to know as much as possible about the 3 peice coffee set I have - it was given to me by my grandmother? @ 30 years ago. The peices all have a date stamp in green 7 - 39 and all the peices have 6906 in red - the coffee pot has another number on 328 in red and the sugar bowl and cream jug have 520 - embossed in the bottom of the sugar bowl in another number 7668 which is stamped into the china its self.

The pattern is all hand painted and looks like a mother of pearl wash under the gold painted sections and there are other ares that have been left plain white

There are no breaks at all and no damage anywhere.