"One of my best pictures"
The picture of Gloves in the newspaper the clerk is reading is, per the trivia notes, of Bogart playing Roy Earle in "High Sierra". So when "Gloves" says it's "one of my bets pictures" it has a double meaning.
That goes with the suggestion in another post that the Casablanca reference to the Nazi's not invading certain parts of New York being a reference to this film, (it's said to Veidt, the bad guy here.) Back in the studio era, there are many references to other films done by the same studio and often by the same stars. It was a fun era that way.
The past is a series of presents. The present is living history we are privileged to witness