Two thugs beat and robbed a 93-year-old Manhattan woman on her birthday — and made off with a measly $7, police sources said Friday.

The nonagenarian was walking home from the area of Park Avenue and East 68th Street in the Upper East Side around 9 p.m. Thursday when the two strangers targeted her.

Surveillance footage shows the duo following her for several blocks — with both parties even passing each other multiple times, sources said.

When the unsuspecting woman reached her apartment building on East 66th Street near Third Avenue, the men suddenly approached and attacked her.

The brutes then snatched her purse and fled but only made off with the $7 and cards inside.

The victim was taken to New York–Presbyterian Hospital with a broken left arm, a bruised left elbow and bruises to her head, police said.

Cops describe both men as 5-foot-8, around 135 pounds and approximately 15 to 18 years old.