When Raylan is handed the chocolate egg cream it has a large, white head on it. When he takes a sip, it is solid brown, and then when Pinter takes his drink, the white head is back.
When Travis and Curtis are practicing quick-drawing guns in Travis' backyard, there are 4 guns laid out on the table. Curtis chooses the revolver and Travis picks up the Beretta and sticks it in his belt. However, when he draws the weapon and kills Curtis, he is holding the Sig Sauer, not the 92FS.
Raylan enters the restaurant to meet Pinter, and the first thing he sees is a bar. However, Harlan County is a dry county and the city of Harlan is a "moist city," in which only restaurants seating over 100 patrons may serve alcoholic beverages. The intimate French-style restaurant shown would hardly qualify.
When Raylan visits Pinter's house, the viewer sees a Mediterranean garden with tropical plants--none of which would survive in Harlan, Kentucky.
After seeing Raylan at Pinter's house, Travis Travers comments that he had never seen a "Lexington cop dressed like a cowboy." Lexington is over three hours from Harlan, and not in the same jurisdiction.