The incident happened on August 14, 2010, at 8:15 p.m.
Police say the man punched the woman in her head outside the Astoria Federal Savings Bank at 269 Route 25 in Coram.
Crime Stoppers offers a cash reward of up to $5000.00 for information that leads to an arrest.
Anyone with information about this crime is asked to call anonymously to Crime Stoppers at 1-800-220-TIPS. All calls will be kept confidential.