Posted By:
GlennChris,
I don't really know how to tell if it's letterpress, but it's definitely not from a magazine. It's on a thin sheet of cardboard. As far as I can tell, it's an original piece from around 1910 (the end of Waddell's career). The bottle shown at the bottom of the sign was replaced by the now famous contoured Coke bottle in 1916. If I'm right about the age, the piece has held up remarkably well for its size.
There was a similar, and I think slightly smaller Coca Cola sign featuring Hughie Jennings on ebay recently (a month ago?), and I think that one was from 1915.