Isaac is a fictional character portrayed by David Fresco in the TV series Seinfeld.
In the first episode they appeared in, titled The Pony Remark (season 2), they were 81 years old.
They appear in 1 episodes out of a total of 173 aired
Episodes1
The Pony Remark
episode S2.E2 january 1991Jerry fears that an inappropriate comment he made at a dinner party caused his relative's subsequent death.