Factual error: The movie is set in 1948. When Easy first visits Albright about the job, Albright throws some $20 bills down in front of him. The top bill bears the signature of Treasury Secretary Nicholas F. Brady, which appeared on paper currency from 1988 to 1993.
Factual error: In 1948 the police did not cuff someone with their hands behind their back, it was always in the front. The practice of cuffing in the back didn't start until the mid 60's. (00:28:00 - 01:04:00)