Greek in origin,..the classical trained/educated horners of the time would have been familiar with the symbol. There are around a dozen attributed to 1 single maker,..but multiple period makers had used this symbol on their horns. Meaning is a little up for interpretation but a couple of theories are it represented the death and disease of war,...or the wish to bring death to an enemy type thing. Only the outline has 1st pass of ink at the moment...all of the details in the neck, wings, tail area are only penciled and scribed. Still have some details to pencil in and scribe before adding some more ink. Horn was made by Bill Smith quite a few years ago.