Many early Greek and Roman coins bear the monograms or logos of rulers or towns . The most famous of these early logos is the sacred monogram , which is formed by the conjunction of the first two Greek letters of XR , S , T , O and S : (Christ) , usually with the A : (alpha) and O : (omega) if the Apocalypose on each side of the coin . The Middle Ages were extremely prolific in inventing ciphers for ecclesiastical , artistic , and commercial use .
A logo can be a sign of graphics or logotype and used as a company's symbol -- a corporate identity . The logo should be literally the first piece of graphyics that the reader would see , no matter on print covers or web pages .


