1931 - 1936, 12 partly better covers and cards, as well Polar travel 1931 Si no. 119 E card with 1 RM as well Si no. 119 F letter with 4 RM Polar travel as well Chicago travel 1933 with Si no. 238 Aab registered card with 1 RM including, Si no. 238 Bca registered letter with 2 RM including and Si no. 238 Baa registered letter 1 and 2 RM. Including, mostly from or to Göttingen, extensive lot from collector's estate