Finely Decorated Commemorative Snuff Box for Queen Victoria & Prince Albert

I believe this snuff box to be made from Bois Durci, being an early moulded plastic it would have allowed the fine and detailed decoration which wonderfully covers this box. It is most likely to be a Commemorative Piece, either for Queen Victoria and Prince Albert's engagement in 1839 or their marriage in 1840. On the lid there is as to be expected the profiles of both Victoria and Albert with their birth dates framing them, but on the base of the box is an image which I have been unable to find any information about. It carries at its centre a crest with a woman and a man standing on one side of it and a woman and three children on the other. Around the edge of the box there is a very pleasing pattern reminding me of basket weaving. The snuff box is small and still carries some remnants of the Snuff it once contained.