The birth certificate that Rube looks at contains his full name (Rube John Sofer), age (49), address (243 Georgian Ln., Englewood, NJ), and occupation (Sales); his wife's full name (Lucy Sonia Debrouski), age (24), and country of origin (Czechoslovakia); and his daughter's full name (Rose Anne Sofer), and date of birth (3/19/25).
Rose's birth certificate shows that Rude is twice the age of his wife (25 years older).