2 cradle stamps with map motifs around 1950

Two old cradle stamps (rocking stamps / school stamps) with map motifs; around 1950; Austrian map with scale of 1: 3,500,000 and world map with scale of 1: 240,000,000; an interesting historical teaching tool for children; Weighing stamps have a curved impression surface, which was mainly used for larger motifs and is still in use today; traces of use according to age; measurement: large stamp approx. 13 x 16.5 cm x 5.5 cm / small stamp approx 11.5 x 16 cm