This piece was sold on eBay a few days ago.
At $143.50 it was a steal for the lucky winner.
If it's a real Caniff, that is. The piece is unsigned and here's what the seller wrote:
"[...] a MILT CANIFF Original STEVE CANYON Drawing Pencil & Ink. The guy that I got this from said that Milt Caniff drew and inked it as an example in his art class. Measures 8 1/2" x 11".
Could be the real deal or a darn good copy of an original Caniff piece. Guess that's why it didn't fetch more. A beautiful and iconic piece none the less.