Some times an offer just seems to good to be true. When the piece is ultra rare or the price is such a bargain, that's when you have to be extra careful. Don't let your emotions carry you away. Do your homework, ask the opinion of experienced collectors who don't have a vested interest in the sale. And above all, use your instincts. Your first impression is usually the best.
I don't think Duane is in the hobby any more... too bad. His cartoons appeared in "Der Gauleiter" every month for quite a few years. It seems they are appreciated as much today as they were 30 years ago. Several collectors have asked to see them again, so I'll post more as time goes on. Bob Treend