These days, advertisement posters and signs are cheap, cheerful, and on paper. Here today, gone tomorrow. Use and discard. Back in the days however, signs promoting wares could be more durable. Meant to last a long time.
Like this one. Steel plate with enamel, good to hang inside and outside for years. And in Norwegian, which makes it even more interesting in my eyes – but then I am biased in that regard.
I’ve borrowed the image from an auction I didn’t win, since it was simply too good not to share.