Brittania Rules the Wave

Colour trade card advertisement for Ocean Wave Baking Powder, depicting an illustration of Queen Victoria, an ocean wave, and a tin of Ocean Wave Baking Powder. Text states, "Britannia Rules the Wave// Ocean Wave Baking Powder rules the cooking world. The back of the card contains text stating, "In anticipation of the Jubilee of Her Gracious Majesty the Queen, the manufacturers of OCEAN WAVE BAKING POWDER, in order to fittingly commemorate the event, have had specially prepared for their customers, at great expense, the celebrated engraving entitled, "Our Queen and Her Defenders..."" with an b/w image of the queen and some soldiers below.  -completely enclosed in sealed, clear plastic-