Charles Ellicott Commentary Job 42:11

"Then came there unto him all his brethren, and all his sisters, and all they that had been of his acquaintance before, and did eat bread with him in his house: and they bemoaned him, and comforted him concerning all the evil that Jehovah had brought upon him: every man also gave him a piece of money, and every one a ring of gold." — Job 42:11 (ASV)

Every man also gave him a piece of money. —The Hebrew word is kesîtâh, which is also found in the narrative of Jacob’s purchase of the field of the children of Hamor (Genesis 33:19). Some have supposed, from a comparison of this passage with Genesis 23:16, which relates the corresponding transaction between Abraham and the sons of Heth, that the value of the kesîtâh was four shekels, but this is, of course, not certain from these narratives. Tradition says that the kesîtâh was a coin with the figure of a lamb stamped upon it.