The name of Robinson's character is spelled "Marko" throughout the movie on signs, on his beer, on his Saratoga mailbox, on his office door, and by the character himself, but the name is spelled "Marco" in the closing credits.
The goof item below may give away important plot points.
When Remy and his henchmen decide to distribute the bodies of Little Dutch's gang at the homes of their enemies, they earmark the corpse of No-Nose Cohen for the home of a rival brewer named Colonel Jake Statz. However, when they return from their task, both Remy and Lefty speak of leaving Cohen's body at the home of Jake Schultz. Compounding this, when they come back from retrieving the bodies, Guiseppe once again refers to the Colonel as Jake Statz.