Åland Post issued this beautiful mini sheet with two stamps on 24.10.2019. Artist Martin Mörck based his illustration on the yellow-necked mouse and harvest mouse, placing the mice in blackberry bushes on an island in the Åland archipelago. In the background, we see the Klobben islet located in the outer archipelago of Saltvik and sailing ship Albanus.
There's also one additional stamp at the back.
Thank you so much, Kimmo!