4 RM Polar travel 1931, on appropriate Zeppelin letter (winner no. 119 F) from \"FRIEDRICHSHAFEN (Lake Constance) b 24.7.31\" to ice-breaker \"Malygin\" and then further to brooklyn / USA. Reverse violet stamp \"FIRST INTOURIST 1931 expedition ICE-BREAKER MALYGIN\". An attractive and very fine document, Michel 1.100.- plus