In the 1950's, Tove Jansson created 10 different advertisements for the Finnish bank Yhdyspankki (Foreningsbanken, Union Bank of Finland), featuring Moomin characters, including Hemulen, to promote saving money among children, associating the Moomin characters with the positive message of saving. These advertisements were published between 1956-1958 in small circulation publications. Extremely rare and hard to find Moomin rarities. Size 20,5 x 27 cm. The story of these rare ADs can be found from the recently published 500-pages book "Treasures from Moomin Valley" by Anders Landen. Moomin, Muumi, Mumin, Mummi, Mumi, Mumini, Muminki, Moomin art, vintage, Tove Jansson, rare, rarities