Serbia, Michel 3, 4x (2). SERBIA. Mi.3, 4x (2). 1867 (3 July). ALEKSINAK to GRAGUJEVAC. Entire letter franked with two single BELGRADE PRINTING 10 pa. ochre and VIENNA PRINTING 40 pa. blue, cancelled by boxed NAPLACENO and PREPORUCENO. An outstanding mixed franking Vienna and Belgrade printings. UNIQUE KNOWN. Cert. V. KARDOSCH and J. VELICKOVIC.