Peoples help 1931 on transported R letter with a set "SAARBRÜCKEN * 2 bb 24. 1. 31 10. " to Berlin-Reinickendorf, arrival postmark "Berlin-Reinickendorf east 1 26. 1. 31. 5-6", certificate Ney VP (2016) "the set on the transported cover is in perfect quality. " Michel 650, only for single stamps.