Sweden. Facit 9v6 on cover, 12 öre blue, “EXCLAMATION MARK” (Utropstecknet) variety (pos 53 in plate VI) on letter with notation "Prof." and with preserved cloth sample inside. Sent from KATRINEHOLM 16.6.1868 to Svenljunga. Some imperfections. Only a few examples of this scarce and sought-after variety on cover are recorded, as well as only a few samples are recorded from the CoA period. Ex. Michtner.
