I recently tweeted about my small stash of early-to-mid 20th-Century card games — the accumulated harvest of an erstwhile eBay habit! — and their often wonderful visual design. This seemed to pique enough people’s curiosity, so for the interested reader here are some images of the first game out of the metaphorical hat: Rainbow.
I can’t find any additional information about the game, but the British patent number suggests that the patent was granted during 1920, most probably in the latter half of that year. Which, if you consider the design on the back of the cards, presents an interesting confluence of history: this is precisely the period during which Adolf Hitler adopted the swastika as the symbol of the Nazi Party.