Flag of Greece of the exact reasoning behind its official adoption in early 1822. It has been suggested by some Greek historians that the current flag derived from an older design, the virtually identical flag of the powerful Cretan Kallergis family. This flag was based on their coat of arms, whose pattern is supposed to be derived from the standards of their claimed ancestor, Byzantine Emperor Nicephorus II Phocas (963–969 AD). This pattern (according to not easily verifiable descriptions) included nine stripes of alternating blue and white, as well as a cross, assumed to be placed on the upper left. Although the use
Flag of Greece featured the coat of arms of the dynasty at its centre and would be distinguished by the number of crowns present at each of the four corners of the flags: The flag of the king featured a crown on each of the corners of the flag. This was the last design of a royal standard to be adopted prior to the eventual formal abolition of the monarchy in 1973. The president's flag is currently prescribed by Presidential Decree 274/1979. One of the most recognisable (other than the cross) and beloved Greek symbols, the double-headed eagle, is not a part of