School savings coupons I. Mint set 2 values. School Savings Stamps in Greenland - a new series. In 1957, a number of savings stamps were issued in Greenland. The aim was to encourage people to save up. Artist Nina Spore Kreutzmann has created both stamps based on Alex Secher's originals. Face value / post office price: 15 DKK. Date of issue: 14th September 2020