It occurred near the 300 block of Robert Street around 5:40 p.m. on Monday, Jan. 29, Baltimore Police said.
The man can be seen on video crossing the street as the suspects approach him, beat and rob him before running away.
One is seen picking up a wooden plank from the street and using it during the attack.
The suspects are believed to be males in their late teens or early 20s.
Metro Crime Stoppers is offering a $2,000 reward for any information that leads to an arrest and felony charges.
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