RATIBOR 17.7.1920 ZKr (274.7) on registered letter with mixed franking 15 Pfg dark violet horizontal pair postage stamps issue drawing numbers 1920, 5 Pfg dark yellow green, 5 Pfg green, 10 Pfg dark red orange, 20 Pfg blue, 30 Pfg yellow orange postage stamps issue smelting works and peace pigeon 1920 to Auerhammer, transit postmark ZKr AUE (Ore Mountains) 18.7.1920 at back, transport traces