MANAMA 1966, olympic games, 4 values complete with overprint "Manama" and new currency "dirham" on airmail registered letter from MANAMA 13.10.66 to New York, arrival 18.10.66, rare cover the there postal administration MANAMA 1966, Olympic Games, complete set of four values overprinted "Manama" and new currency "dirham" on airmail cover from MANAMA 13.10.66 to New York, arrival Cds 18. OCT. 66 on reverse, rare usage by the postal service of Manama, very fine