During the meal Bat Masterson is having with Cal Beamus and Kate Gannon, there were no marks on the right side of Gannon's face. She had been beaten up that morning and had a significant bruise. In the next scene the bruise is again clearly visible on Kate's face, and remains until the end of the show.
While Bat Masterson is enjoying a meal at a hotel restaurant, the waiter pours Bat a cup of coffee. A wrist watch is clearly visible on the waiter's wrist. This series takes place mainly in the 1880's and wrist watches did not come into common use until the 1920's.