The image comes with this synopsis of the season:

“Marvel’s Agent Carter” returns for a second season of adventure and intrigue, starring Hayley Atwell in the titular role of the unstoppable agent for the SSR (Strategic Scientific Reserve). Dedicated to the fight against new Atomic Age threats in the wake of World War II, Peggy must now journey from New York City to Los Angeles for her most dangerous assignment yet. But even as she discovers new friends, a new home—and perhaps even a new love—she’s about to find out that the bright lights of the post-war Hollywood mask a more sinister threat to everyone she is sworn to protect. 

Over the left should of the man in the picture is a commemorative plaque with Stan Lee's picture in it. Watch the trailer again to see if you can spot it around the two minute mark.