'Signet' in the Bible

“What should I give you?” he asked.She answered, “Your signet ring, your cord, and the staff in your hand.” So he gave them to her and slept with her, and she got pregnant by him.

As she was being brought out, she sent her father-in-law this message: “I am pregnant by the man to whom these items belong.” And she added, “Examine them. Whose signet ring, cord, and staff are these?”

Pharaoh removed his signet ring from his hand and put it on Joseph’s hand, clothed him with fine linen garments, and placed a gold chain around his neck.