Continuity mistake: At 49:10 Wick took the lapel pin off and placed it in his right front jacket pocket, at 56:20 Wick takes it out of his front left jacket pocket. Yes he should have replaced it during the 7:10 in between but since they didn't it's a mistake.
Continuity mistake: The scenery view shots near the beginning of the movie apparently are not meant to represent the passage of time (such as "one year later"), so the various changes in foliage - from green leaves (Summer) to leafless trees (Winter) to orange leaves (Autumn) to green leaves (Summer) and back to Fall foliage - do not make sense. This inconsistent foliage continues into the movie. (00:05:30 - 00:06:34)