309 BULGARIA - POSTAL HISTORY Auction #1946: WORLDWIDE POSTAL HISTORY, COVERS AND CARDS Cover / Cat.#: VF. 8/NO/1927 Sofia - Varna, BUNAVAD first flight, cover of very fine quality! Starting Price: US$ 25 Current Price: US$ 25 Bid US$ 25 or more Closing: 2019-11-28 22:05:00