Souvenir sheets issue "olympic games 1936", souvenir sheet pair - each souvenir sheet on cover with rare cancellation through date stamp "Berlin Dahlem 27.8.36" respectively "Berlin * 9 25.8.36", souvenir sheet 5 with correctly franked additional franking on double heavy air mail letter to Switzerland, souvenir sheet 6 likewise on air mail letter to Switzerland, Michel for date stamp unpriced!