DARMSTADT 23.6.12, airmail stamp 20 Pfg together with 5 Pfg Germania on officially airmail postcard, ribbed box, to Karlovy Vary / Bohemia to a patient at a health resort from Essen, reverse much text and dated "Cologne 18.6.12", in Karlovy Vary delivery not possible and with one-line cancel "starting price unsuccessful" further to Essen / Ruhr, in blue is signed postage due "7" Pfg