A Handsome Dude in Any Form

 The artist's signature is Sotero.  Haven't discovered anything about him/her, except that I did run across drawings of William Powell and Joan Crawford by the same artist.  So, it was probably a promotional campaign of MGM's.  Joan's is dated 1938.  I so admire the ability to capture a likeness with so few strokes.  The rather faint tuxedo collar and tie, Bob's furrowed brow ... nifty.