Posted By:
PaulPaulPaulI don't know much about printing, but I don't think Goudey would use a two-color printing process to create the green ink on the back. When you are printing just one color, especially text, you just mix a batch of the color and then print it. You don't print yellow over blue to make green. At least I don't think so.
Maybe the guy mixing the green ink was a little drunk that day.