TURKISH EMPIRE (MACEDONIA)-AUSTRIA, 1866, Entire registered letter from Cavalla via Trieste to Vienna, prepaid with Austrian Levante 1864, 15 soldi brown and 2 copies 10 soldi blau, tied by 2 clear strikes of blue single circle "CAVALLA 26/5" with adjacent blue "RECOM.". The franking consists of 25 soldi postage and 10 soldi registration fee. Franked letters from Cavalla in this period are extremely rare; this registered letter is supposed to be unique. Certificate Eichele (2010)
