Gold is tougher in general than the other colors for some reason. Purple is thought to be tough mainly because of the demand for it. The colors do seem to spike sometimes, meaning you may not see a green for quite a while and 2/3 will pop up at once. Some subjects are nearly impossible in certain color combinations, although at this point every color combo has been confirmed in the six main colors. I believe 22/30 different Orange subjects have been confirmed and there are two Orange Cobbs, adding to the mystery of that color. There are 8/10 of us who chart the colors and keep in touch on different color combos, it really is a fantastic set. Some combos just aren’t seen sometimes for years. Recently it was speculated that the purple Wagner didn’t exist because nothing could be found on it. There are actually four known, people just hold them because it’s Wagner or they are doing a purple run (or both). Good luck in collecting this great set.
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