Ad card for Iittala, a Finnish glassware. The style is Kartio, according to Marika (miinahumppa).
I am a fan of humorous ad cards the most, but sometimes a simplistic card, ad or not, is a nice change of pace.
The card arrived with NO cancellation marks on this cool stamp of Maarit, a singer from Finland. It's from a series of stamps featuring legendary Finnish bands and singers.