This is a vintage Cross Classic Century Gold Ballpoint Pen (typically 10K or 12K gold-filled/rolled gold) housed in a branded beige leather Cross pouch and case. These iconic slim luxury pens generally sell secondhand for about $40 to $120 depending on the exact gold content and condition. 

• Brand: A.T. Cross Company

• Model: Classic Century

• Material: Gold-filled or rolled gold finish (often marked as 10K or 1/20 10K gold on the cap band)

• Mechanism: Twist-action ballpoint