That’s a big pen in that box!
Not all the advertisements that come my way have a date on them. In this case, because there’s no actual pen in the advert., dating matters a little less. All the same, I would like to know, but I’m hopeless on dating fashions. However, overleaf there’s a picture of a woman in a cloche hat. Wikipedia, that refuge of the lazy and the none too critical, tells me the cloche hat was invented in 1908, became especially popular in the 1920s and continued to be worn until about 1933. Doesn’t exactly pinpoint it, does it?
A little bit of googling around tells me that though the 1920s was the period of the flappers and their short dresses, that was evening wear. Day time dresses were much longer – the hem at ankle level. Because of the swirl of holly around her feet, the Swan girl’s hemline isn’t really visible. Early 1920s, then?
It’s possible that it’s Edwardian, though. There’s no mention either of the Great War or of the period of recovery after it, as there is in Swan adverts of those times, so it’s fair to assume that if it’s not as late as the early twenties, it’s before the war.
I dunno. Maybe you do. I just wish the people I buy these things from would take note of the date of the magazines they cut them out of.