Anyone who has bought/sold these knows that the premiums are all over the board, and really depend on whether or not there are two interested buyers when one is offered. I've seen Willis portraits that had odd but ugly faded purple backgrounds go for 2-3X normal price, and I've seen beautiful orange backgrounds (that should have been red) go for just a small fraction above the normal-background version. Like the others, the orange Cobb is also all over the board - when I was looking for one, and forum members knew it, the premium went way up
. Now it isn't so high. Go figure.