1920 and an image of Father Christmas wearing the familiar red and white outfit. So the next time someone tries to go all 'bah humbug' and tell you that Coca-Cola invented 'Santa', you can show them this picture and tell them that they didn't start using this image of Father Christmas until the 1930s!
I like his pixie hood and that he seems to live in a yurt.
Also, the envelope is also addressed to 'Mrs Tolkien' - would that be because of John being too young to read it himself?